Is 1969 a deficient number and what is its deficiency?

Is 1969 a deficient number?

Here we will explain and calculate if 1969 is a deficient number and its deficiency if applicable.

1969 is a deficient number if the sum of its proper divisors is less than 1969.

The sum of its proper divisors is calculated as follows: 1 + 11 + 179 = 191.

191 is less than 1969. Therefore, 1969 is a deficient number.

The deficiency of 1969 is 1969 minus the sum of its proper divisors. Thus, the deficiency of 1969 is 1969 - 191 = 1778

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