Is 3921 a deficient number and what is its deficiency?

Is 3921 a deficient number?

Here we will explain and calculate if 3921 is a deficient number and its deficiency if applicable.

3921 is a deficient number if the sum of its proper divisors is less than 3921.

The sum of its proper divisors is calculated as follows: 1 + 3 + 1307 = 1311.

1311 is less than 3921. Therefore, 3921 is a deficient number.

The deficiency of 3921 is 3921 minus the sum of its proper divisors. Thus, the deficiency of 3921 is 3921 - 1311 = 2610

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