Is 1995 a deficient number and what is its deficiency?

Is 1995 a deficient number?

Here we will explain and calculate if 1995 is a deficient number and its deficiency if applicable.

1995 is a deficient number if the sum of its proper divisors is less than 1995.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 7 + 15 + 19 + 21 + 35 + 57 + 95 + 105 + 133 + 285 + 399 + 665 = 1845.

1845 is less than 1995. Therefore, 1995 is a deficient number.

The deficiency of 1995 is 1995 minus the sum of its proper divisors. Thus, the deficiency of 1995 is 1995 - 1845 = 150

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