Is 1391 a deficient number and what is its deficiency?

Is 1391 a deficient number?

Here we will explain and calculate if 1391 is a deficient number and its deficiency if applicable.

1391 is a deficient number if the sum of its proper divisors is less than 1391.

The sum of its proper divisors is calculated as follows: 1 + 13 + 107 = 121.

121 is less than 1391. Therefore, 1391 is a deficient number.

The deficiency of 1391 is 1391 minus the sum of its proper divisors. Thus, the deficiency of 1391 is 1391 - 121 = 1270

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