Is 3891 a deficient number and what is its deficiency?

Is 3891 a deficient number?

Here we will explain and calculate if 3891 is a deficient number and its deficiency if applicable.

3891 is a deficient number if the sum of its proper divisors is less than 3891.

The sum of its proper divisors is calculated as follows: 1 + 3 + 1297 = 1301.

1301 is less than 3891. Therefore, 3891 is a deficient number.

The deficiency of 3891 is 3891 minus the sum of its proper divisors. Thus, the deficiency of 3891 is 3891 - 1301 = 2590

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