Is 7 a deficient number and what is its deficiency?

Is 7 a deficient number?

Here we will explain and calculate if 7 is a deficient number and its deficiency if applicable.

7 is a deficient number if the sum of its proper divisors is less than 7.

The sum of its proper divisors is calculated as follows: 1 = 1.

1 is less than 7. Therefore, 7 is a deficient number.

The deficiency of 7 is 7 minus the sum of its proper divisors. Thus, the deficiency of 7 is 7 - 1 = 6

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