Is 84 a deficient number and what is its deficiency?

Is 84 a deficient number?

Here we will explain and calculate if 84 is a deficient number and its deficiency if applicable.

84 is a deficient number if the sum of its proper divisors is less than 84.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 6 + 7 + 12 + 14 + 21 + 28 + 42 = 140.

140 is not less than 84. Therefore, 84 is not a deficient number.

The deficiency of 84 is 84 minus the sum of its proper divisors. Thus, the deficiency of 84 is 84 - 140 = No Deficiency

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