Is 813 a deficient number and what is its deficiency?

Is 813 a deficient number?

Here we will explain and calculate if 813 is a deficient number and its deficiency if applicable.

813 is a deficient number if the sum of its proper divisors is less than 813.

The sum of its proper divisors is calculated as follows: 1 + 3 + 271 = 275.

275 is less than 813. Therefore, 813 is a deficient number.

The deficiency of 813 is 813 minus the sum of its proper divisors. Thus, the deficiency of 813 is 813 - 275 = 538

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