Is 393 a deficient number and what is its deficiency?

Is 393 a deficient number?

Here we will explain and calculate if 393 is a deficient number and its deficiency if applicable.

393 is a deficient number if the sum of its proper divisors is less than 393.

The sum of its proper divisors is calculated as follows: 1 + 3 + 131 = 135.

135 is less than 393. Therefore, 393 is a deficient number.

The deficiency of 393 is 393 minus the sum of its proper divisors. Thus, the deficiency of 393 is 393 - 135 = 258

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