# What is meant by deficient number?

## What is meant by deficient number?

Definition of deficient number : an imperfect number (as 8) that is greater than the sum of its divisors.

### What is the definition of deficient and abundant numbers?

A deficient number is greater than the sum of all of its divisors except itself. An abundant number is a number for which the sum of its proper divisors is greater than the number itself.

#### Why 1 is a deficient number?

A number n is said to be Deficient Number if sum of all the divisors of the number denoted by divisorsSum(n) is less than twice the value of the number n. And the difference between these two values is called the deficiency. The first few Deficient Numbers are: 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19 …..

What is perfect abundant and deficient number?

Numbers whose sum of proper factors equals the number itself (such as 6 and 28) are called perfect numbers, while numbers whose sum of proper factors is less than the number itself are called deficient numbers.

What does deficiency mean in math?

definition and example …than the number; in a deficient number, the sum of its proper divisors is less than the number. A perfect number is an integer that equals the sum of its proper divisors. For example, 24 is abundant, its divisors giving a sum of 36; 32 is deficient, giving a sum…

## What is deficient number in Java?

The deficient number can be defined as the number for which the sum of the proper divisors is lesser than the number itself. As an example, consider the number 21. Its proper divisors are 1, 3 and 7, and their sum is 11. Because 11 is less than 21, the number 21 is deficient.

### Is 6 a deficient number?

6 is a deficient number if the sum of its proper divisors is less than 6. The sum of its proper divisors is calculated as follows: 1 + 2 + 3 = 6. 6 is not less than 6. Therefore, 6 is not a deficient number.

#### Are prime numbers deficient number?

Deficient Numbers Any positive integer that exceeds the sum of its distinct proper factors. Any prime number is deficient, because it has only one proper factor: 1. All numbers of the form 2n are also deficient. Example: 32 (=25) is a deficient number because the sum of its distinct proper factors is 31 (1+2+4+8+16).

What is deficient number in C?

What is a deficient number: A number is called a deficient number or defective number if the sum of divisors of the number is less than the value of 2 * number. Also, the sum of all proper divisors of a deficient number is less than the number itself.

Is 36 a deficient number?

So, 36 is not a deficient number!

## How do you find a deficient number?

To find out if a number is deficient, add the proper factors of a number and see if the sum is less than the original number. If the sum is less than the original number, than the number is deficient.