Is 921 a deficient number and what is its deficiency?

Is 921 a deficient number?

Here we will explain and calculate if 921 is a deficient number and its deficiency if applicable.

921 is a deficient number if the sum of its proper divisors is less than 921.

The sum of its proper divisors is calculated as follows: 1 + 3 + 307 = 311.

311 is less than 921. Therefore, 921 is a deficient number.

The deficiency of 921 is 921 minus the sum of its proper divisors. Thus, the deficiency of 921 is 921 - 311 = 610

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