Is 1998 a deficient number and what is its deficiency?

Is 1998 a deficient number?

Here we will explain and calculate if 1998 is a deficient number and its deficiency if applicable.

1998 is a deficient number if the sum of its proper divisors is less than 1998.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 6 + 9 + 18 + 27 + 37 + 54 + 74 + 111 + 222 + 333 + 666 + 999 = 2562.

2562 is not less than 1998. Therefore, 1998 is not a deficient number.

The deficiency of 1998 is 1998 minus the sum of its proper divisors. Thus, the deficiency of 1998 is 1998 - 2562 = No Deficiency

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