Is 1000 a deficient number and what is its deficiency?

Is 1000 a deficient number?

Here we will explain and calculate if 1000 is a deficient number and its deficiency if applicable.

1000 is a deficient number if the sum of its proper divisors is less than 1000.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 8 + 10 + 20 + 25 + 40 + 50 + 100 + 125 + 200 + 250 + 500 = 1340.

1340 is not less than 1000. Therefore, 1000 is not a deficient number.

The deficiency of 1000 is 1000 minus the sum of its proper divisors. Thus, the deficiency of 1000 is 1000 - 1340 = No Deficiency

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