Is 4989 a deficient number and what is its deficiency?

Is 4989 a deficient number?

Here we will explain and calculate if 4989 is a deficient number and its deficiency if applicable.

4989 is a deficient number if the sum of its proper divisors is less than 4989.

The sum of its proper divisors is calculated as follows: 1 + 3 + 1663 = 1667.

1667 is less than 4989. Therefore, 4989 is a deficient number.

The deficiency of 4989 is 4989 minus the sum of its proper divisors. Thus, the deficiency of 4989 is 4989 - 1667 = 3322

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