Is 1191 a deficient number and what is its deficiency?

Is 1191 a deficient number?

Here we will explain and calculate if 1191 is a deficient number and its deficiency if applicable.

1191 is a deficient number if the sum of its proper divisors is less than 1191.

The sum of its proper divisors is calculated as follows: 1 + 3 + 397 = 401.

401 is less than 1191. Therefore, 1191 is a deficient number.

The deficiency of 1191 is 1191 minus the sum of its proper divisors. Thus, the deficiency of 1191 is 1191 - 401 = 790

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