Is 4009 a deficient number and what is its deficiency?

Is 4009 a deficient number?

Here we will explain and calculate if 4009 is a deficient number and its deficiency if applicable.

4009 is a deficient number if the sum of its proper divisors is less than 4009.

The sum of its proper divisors is calculated as follows: 1 + 19 + 211 = 231.

231 is less than 4009. Therefore, 4009 is a deficient number.

The deficiency of 4009 is 4009 minus the sum of its proper divisors. Thus, the deficiency of 4009 is 4009 - 231 = 3778

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