Is 4389 a deficient number and what is its deficiency?

Is 4389 a deficient number?

Here we will explain and calculate if 4389 is a deficient number and its deficiency if applicable.

4389 is a deficient number if the sum of its proper divisors is less than 4389.

The sum of its proper divisors is calculated as follows: 1 + 3 + 7 + 11 + 19 + 21 + 33 + 57 + 77 + 133 + 209 + 231 + 399 + 627 + 1463 = 3291.

3291 is less than 4389. Therefore, 4389 is a deficient number.

The deficiency of 4389 is 4389 minus the sum of its proper divisors. Thus, the deficiency of 4389 is 4389 - 3291 = 1098

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