Is 4221 a deficient number and what is its deficiency?

Is 4221 a deficient number?

Here we will explain and calculate if 4221 is a deficient number and its deficiency if applicable.

4221 is a deficient number if the sum of its proper divisors is less than 4221.

The sum of its proper divisors is calculated as follows: 1 + 3 + 7 + 9 + 21 + 63 + 67 + 201 + 469 + 603 + 1407 = 2851.

2851 is less than 4221. Therefore, 4221 is a deficient number.

The deficiency of 4221 is 4221 minus the sum of its proper divisors. Thus, the deficiency of 4221 is 4221 - 2851 = 1370

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