220390983 has 8 divisors (see below), whose sum is σ = 326505200. Its totient is φ = 146927304.

The previous prime is 220390969. The next prime is 220390999. The reversal of 220390983 is 389093022.

220390983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220390983 - 2¹³ = 220382791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220392983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4081288 + ... + 4081341.

It is an arithmetic number, because the mean of its divisors is an integer number (40813150).

Almost surely, 2^220390983 is an apocalyptic number.

220390983 is a deficient number, since it is larger than the sum of its proper divisors (106114217).

220390983 is an equidigital number, since it uses as much as digits as its factorization.

220390983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162638 (or 8162632 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 220390983 is about 14845.5711577561. The cubic root of 220390983 is about 604.0384817887.

The spelling of 220390983 in words is "two hundred twenty million, three hundred ninety thousand, nine hundred eighty-three".