Is 4390 a deficient number and what is its deficiency?

Is 4390 a deficient number?

Here we will explain and calculate if 4390 is a deficient number and its deficiency if applicable.

4390 is a deficient number if the sum of its proper divisors is less than 4390.

The sum of its proper divisors is calculated as follows: 1 + 2 + 5 + 10 + 439 + 878 + 2195 = 3530.

3530 is less than 4390. Therefore, 4390 is a deficient number.

The deficiency of 4390 is 4390 minus the sum of its proper divisors. Thus, the deficiency of 4390 is 4390 - 3530 = 860

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