Is 1977 a deficient number and what is its deficiency?

Is 1977 a deficient number?

Here we will explain and calculate if 1977 is a deficient number and its deficiency if applicable.

1977 is a deficient number if the sum of its proper divisors is less than 1977.

The sum of its proper divisors is calculated as follows: 1 + 3 + 659 = 663.

663 is less than 1977. Therefore, 1977 is a deficient number.

The deficiency of 1977 is 1977 minus the sum of its proper divisors. Thus, the deficiency of 1977 is 1977 - 663 = 1314

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