Is 1405 a deficient number and what is its deficiency?

Is 1405 a deficient number?

Here we will explain and calculate if 1405 is a deficient number and its deficiency if applicable.

1405 is a deficient number if the sum of its proper divisors is less than 1405.

The sum of its proper divisors is calculated as follows: 1 + 5 + 281 = 287.

287 is less than 1405. Therefore, 1405 is a deficient number.

The deficiency of 1405 is 1405 minus the sum of its proper divisors. Thus, the deficiency of 1405 is 1405 - 287 = 1118

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