Is 890 a deficient number and what is its deficiency?

Is 890 a deficient number?

Here we will explain and calculate if 890 is a deficient number and its deficiency if applicable.

890 is a deficient number if the sum of its proper divisors is less than 890.

The sum of its proper divisors is calculated as follows: 1 + 2 + 5 + 10 + 89 + 178 + 445 = 730.

730 is less than 890. Therefore, 890 is a deficient number.

The deficiency of 890 is 890 minus the sum of its proper divisors. Thus, the deficiency of 890 is 890 - 730 = 160

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