Is 891 a deficient number and what is its deficiency?

Is 891 a deficient number?

Here we will explain and calculate if 891 is a deficient number and its deficiency if applicable.

891 is a deficient number if the sum of its proper divisors is less than 891.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 11 + 27 + 33 + 81 + 99 + 297 = 561.

561 is less than 891. Therefore, 891 is a deficient number.

The deficiency of 891 is 891 minus the sum of its proper divisors. Thus, the deficiency of 891 is 891 - 561 = 330

Deficient Calculator
You can enter another number here to check if it is a deficient number:

Is 892 a deficient number?
Go here for the next number on our list. Is it deficient?