Is 309 a deficient number and what is its deficiency?

Is 309 a deficient number?

Here we will explain and calculate if 309 is a deficient number and its deficiency if applicable.

309 is a deficient number if the sum of its proper divisors is less than 309.

The sum of its proper divisors is calculated as follows: 1 + 3 + 103 = 107.

107 is less than 309. Therefore, 309 is a deficient number.

The deficiency of 309 is 309 minus the sum of its proper divisors. Thus, the deficiency of 309 is 309 - 107 = 202

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