Is 1001 a deficient number and what is its deficiency?

Is 1001 a deficient number?

Here we will explain and calculate if 1001 is a deficient number and its deficiency if applicable.

1001 is a deficient number if the sum of its proper divisors is less than 1001.

The sum of its proper divisors is calculated as follows: 1 + 7 + 11 + 13 + 77 + 91 + 143 = 343.

343 is less than 1001. Therefore, 1001 is a deficient number.

The deficiency of 1001 is 1001 minus the sum of its proper divisors. Thus, the deficiency of 1001 is 1001 - 343 = 658

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