Is 9 an abundant number and what is its abundance?

Is 9 an abundant number?

Here we will explain and calculate if 9 is an abundant number and its abundance if applicable.

9 is an abundant number if the sum of its proper divisors is greater than 9.

The sum of its proper divisors is calculated as follows: 1 + 3 = 4.

4 is not greater than 9. Therefore, 9 is not an abundant number.

The abundance of 9 is the sum of its proper divisors minus 9. Thus, the abundance of 9 is 4 - 9 = no abundance

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