Is 1491 a deficient number and what is its deficiency?

Is 1491 a deficient number?

Here we will explain and calculate if 1491 is a deficient number and its deficiency if applicable.

1491 is a deficient number if the sum of its proper divisors is less than 1491.

The sum of its proper divisors is calculated as follows: 1 + 3 + 7 + 21 + 71 + 213 + 497 = 813.

813 is less than 1491. Therefore, 1491 is a deficient number.

The deficiency of 1491 is 1491 minus the sum of its proper divisors. Thus, the deficiency of 1491 is 1491 - 813 = 678

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