Is 440 a deficient number and what is its deficiency?

Is 440 a deficient number?

Here we will explain and calculate if 440 is a deficient number and its deficiency if applicable.

440 is a deficient number if the sum of its proper divisors is less than 440.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 8 + 10 + 11 + 20 + 22 + 40 + 44 + 55 + 88 + 110 + 220 = 640.

640 is not less than 440. Therefore, 440 is not a deficient number.

The deficiency of 440 is 440 minus the sum of its proper divisors. Thus, the deficiency of 440 is 440 - 640 = No Deficiency

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