Is 189 a deficient number and what is its deficiency?

Is 189 a deficient number?

Here we will explain and calculate if 189 is a deficient number and its deficiency if applicable.

189 is a deficient number if the sum of its proper divisors is less than 189.

The sum of its proper divisors is calculated as follows: 1 + 3 + 7 + 9 + 21 + 27 + 63 = 131.

131 is less than 189. Therefore, 189 is a deficient number.

The deficiency of 189 is 189 minus the sum of its proper divisors. Thus, the deficiency of 189 is 189 - 131 = 58

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