Is 3987 a deficient number and what is its deficiency?

Is 3987 a deficient number?

Here we will explain and calculate if 3987 is a deficient number and its deficiency if applicable.

3987 is a deficient number if the sum of its proper divisors is less than 3987.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 443 + 1329 = 1785.

1785 is less than 3987. Therefore, 3987 is a deficient number.

The deficiency of 3987 is 3987 minus the sum of its proper divisors. Thus, the deficiency of 3987 is 3987 - 1785 = 2202

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