Is 1821 a deficient number and what is its deficiency?

Is 1821 a deficient number?

Here we will explain and calculate if 1821 is a deficient number and its deficiency if applicable.

1821 is a deficient number if the sum of its proper divisors is less than 1821.

The sum of its proper divisors is calculated as follows: 1 + 3 + 607 = 611.

611 is less than 1821. Therefore, 1821 is a deficient number.

The deficiency of 1821 is 1821 minus the sum of its proper divisors. Thus, the deficiency of 1821 is 1821 - 611 = 1210

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