Is 789 a deficient number and what is its deficiency?

Is 789 a deficient number?

Here we will explain and calculate if 789 is a deficient number and its deficiency if applicable.

789 is a deficient number if the sum of its proper divisors is less than 789.

The sum of its proper divisors is calculated as follows: 1 + 3 + 263 = 267.

267 is less than 789. Therefore, 789 is a deficient number.

The deficiency of 789 is 789 minus the sum of its proper divisors. Thus, the deficiency of 789 is 789 - 267 = 522

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