Is 915 a deficient number and what is its deficiency?

Is 915 a deficient number?

Here we will explain and calculate if 915 is a deficient number and its deficiency if applicable.

915 is a deficient number if the sum of its proper divisors is less than 915.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 15 + 61 + 183 + 305 = 573.

573 is less than 915. Therefore, 915 is a deficient number.

The deficiency of 915 is 915 minus the sum of its proper divisors. Thus, the deficiency of 915 is 915 - 573 = 342

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