- What is perfect number in Java with example?
- What is a Krishnamurthy number in Java?
- Why is three the perfect number?
- What is the most beautiful number?
- What is the happiest number?
- What is the most mysterious number?
- What is a strong number?
- Is 40585 a strong number?
- What is a special number?
- Is 3 a perfect number?
- Why is 7 the perfect number?
- What is Peterson number?

## What is perfect number in Java with example?

A Perfect number is a positive integer that is equal to the sum of its proper divisors except itself.

Let’s take an easy example, such as 6.

1, 2, 3 and 6 are the divisors of 6..

## What is a Krishnamurthy number in Java?

Last Updated: 18-05-2020. A Krishnamurthy number is a number whose sum of the factorial of digits is equal to the number itself. For example 145, sum of factorial of each digits: 1!

## Why is three the perfect number?

Three is the smallest number we need to create a pattern, the perfect combination of brevity and rhythm. … It’s a principle captured neatly in the Latin phrase omne trium perfectum: everything that comes in threes is perfect, or, every set of three is complete.

## What is the most beautiful number?

1.618. This number is also known as Phi or Golden Number or Golden Ratio.

## What is the happiest number?

What is the happiest number between 1 and 1,000,000. Defined the happiest number as the smallest number that finds the most other happy numbers with it, i.e. 7 found four other numbers (49, 97, 130, and 10) making it a rank 4 in happiness.

## What is the most mysterious number?

Therefore the number 6174 is the only number unchanged by Kaprekar’s operation — our mysterious number is unique. The number 495 is the unique kernel for the operation on three digit numbers, and all three digit numbers reach 495 using the operation. Why don’t you check it yourself?

## What is a strong number?

Strong number is a number whose sum of all digits’ factorial is equal to the number ‘n’. Factorial implies when we find the product of all the numbers below that number including that number and is denoted by ! (Exclamation sign), For example: 4! = 4x3x2x1 = 24.

## Is 40585 a strong number?

The sum of the factorial of individual digits of a number is equal to the same number. Sometimes the Strong number also called Krishnamurthy Number. So, 145 is a strong number. … So, 40585 is a strong number.

## What is a special number?

Special Numbers in Java are ones whose sum of factorials of digits is equal to the number itself. It can be an N digit number. The program has to first break the number into its corresponding digits and calculate their factorials. … If the sum matches the original number then the number is called to be a Special number.

## Is 3 a perfect number?

Perfect number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.

## Why is 7 the perfect number?

Seven is the number of completeness and perfection (both physical and spiritual). It derives much of its meaning from being tied directly to God’s creation of all things. … The word ‘created’ is used 7 times describing God’s creative work (Genesis 1:1, 21, 27 three times; 2:3; 2:4).

## What is Peterson number?

A number is said to be a Peterson number if the sum of factorials of each digit of the number is equal to the number itself. Example: Input : n = 145 Output = Yes Explanation: 145 = 5!