Is 1090 a deficient number and what is its deficiency?

Is 1090 a deficient number?

Here we will explain and calculate if 1090 is a deficient number and its deficiency if applicable.

1090 is a deficient number if the sum of its proper divisors is less than 1090.

The sum of its proper divisors is calculated as follows: 1 + 2 + 5 + 10 + 109 + 218 + 545 = 890.

890 is less than 1090. Therefore, 1090 is a deficient number.

The deficiency of 1090 is 1090 minus the sum of its proper divisors. Thus, the deficiency of 1090 is 1090 - 890 = 200

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