Is 2013 a deficient number and what is its deficiency?

Is 2013 a deficient number?

Here we will explain and calculate if 2013 is a deficient number and its deficiency if applicable.

2013 is a deficient number if the sum of its proper divisors is less than 2013.

The sum of its proper divisors is calculated as follows: 1 + 3 + 11 + 33 + 61 + 183 + 671 = 963.

963 is less than 2013. Therefore, 2013 is a deficient number.

The deficiency of 2013 is 2013 minus the sum of its proper divisors. Thus, the deficiency of 2013 is 2013 - 963 = 1050

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