Is 489 a deficient number and what is its deficiency?

Is 489 a deficient number?

Here we will explain and calculate if 489 is a deficient number and its deficiency if applicable.

489 is a deficient number if the sum of its proper divisors is less than 489.

The sum of its proper divisors is calculated as follows: 1 + 3 + 163 = 167.

167 is less than 489. Therefore, 489 is a deficient number.

The deficiency of 489 is 489 minus the sum of its proper divisors. Thus, the deficiency of 489 is 489 - 167 = 322

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