Is 1639 a deficient number and what is its deficiency?

Is 1639 a deficient number?

Here we will explain and calculate if 1639 is a deficient number and its deficiency if applicable.

1639 is a deficient number if the sum of its proper divisors is less than 1639.

The sum of its proper divisors is calculated as follows: 1 + 11 + 149 = 161.

161 is less than 1639. Therefore, 1639 is a deficient number.

The deficiency of 1639 is 1639 minus the sum of its proper divisors. Thus, the deficiency of 1639 is 1639 - 161 = 1478

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