Is 1729 a deficient number and what is its deficiency?

Is 1729 a deficient number?

Here we will explain and calculate if 1729 is a deficient number and its deficiency if applicable.

1729 is a deficient number if the sum of its proper divisors is less than 1729.

The sum of its proper divisors is calculated as follows: 1 + 7 + 13 + 19 + 91 + 133 + 247 = 511.

511 is less than 1729. Therefore, 1729 is a deficient number.

The deficiency of 1729 is 1729 minus the sum of its proper divisors. Thus, the deficiency of 1729 is 1729 - 511 = 1218

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