Is 871 a deficient number and what is its deficiency?

Is 871 a deficient number?

Here we will explain and calculate if 871 is a deficient number and its deficiency if applicable.

871 is a deficient number if the sum of its proper divisors is less than 871.

The sum of its proper divisors is calculated as follows: 1 + 13 + 67 = 81.

81 is less than 871. Therefore, 871 is a deficient number.

The deficiency of 871 is 871 minus the sum of its proper divisors. Thus, the deficiency of 871 is 871 - 81 = 790

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