Is 1247 a deficient number and what is its deficiency?

Is 1247 a deficient number?

Here we will explain and calculate if 1247 is a deficient number and its deficiency if applicable.

1247 is a deficient number if the sum of its proper divisors is less than 1247.

The sum of its proper divisors is calculated as follows: 1 + 29 + 43 = 73.

73 is less than 1247. Therefore, 1247 is a deficient number.

The deficiency of 1247 is 1247 minus the sum of its proper divisors. Thus, the deficiency of 1247 is 1247 - 73 = 1174

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