Is 1263 a deficient number and what is its deficiency?

Is 1263 a deficient number?

Here we will explain and calculate if 1263 is a deficient number and its deficiency if applicable.

1263 is a deficient number if the sum of its proper divisors is less than 1263.

The sum of its proper divisors is calculated as follows: 1 + 3 + 421 = 425.

425 is less than 1263. Therefore, 1263 is a deficient number.

The deficiency of 1263 is 1263 minus the sum of its proper divisors. Thus, the deficiency of 1263 is 1263 - 425 = 838

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