Is 986 a deficient number and what is its deficiency?

Is 986 a deficient number?

Here we will explain and calculate if 986 is a deficient number and its deficiency if applicable.

986 is a deficient number if the sum of its proper divisors is less than 986.

The sum of its proper divisors is calculated as follows: 1 + 2 + 17 + 29 + 34 + 58 + 493 = 634.

634 is less than 986. Therefore, 986 is a deficient number.

The deficiency of 986 is 986 minus the sum of its proper divisors. Thus, the deficiency of 986 is 986 - 634 = 352

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