Is 1209 a deficient number and what is its deficiency?

Is 1209 a deficient number?

Here we will explain and calculate if 1209 is a deficient number and its deficiency if applicable.

1209 is a deficient number if the sum of its proper divisors is less than 1209.

The sum of its proper divisors is calculated as follows: 1 + 3 + 13 + 31 + 39 + 93 + 403 = 583.

583 is less than 1209. Therefore, 1209 is a deficient number.

The deficiency of 1209 is 1209 minus the sum of its proper divisors. Thus, the deficiency of 1209 is 1209 - 583 = 626

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