390664220337 has 6 divisors (see below), whose sum is σ = 564292762722. Its totient is φ = 260442813552.

The previous prime is 390664220291. The next prime is 390664220363. The reversal of 390664220337 is 733022466093.

390664220337 is a `hidden beast` number, since 3 + 90 + 6 + 6 + 4 + 220 + 337 = 666.

It can be written as a sum of positive squares in only one way, i.e., 212148675216 + 178515545121 = 460596^2 + 422511^2 .

It is not a de Polignac number, because 390664220337 - 2⁶ = 390664220273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390664220292 and 390664220301.

It is not an unprimeable number, because it can be changed into a prime (390664220137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21703567788 + ... + 21703567805.

It is an arithmetic number, because the mean of its divisors is an integer number (94048793787).

Almost surely, 2^390664220337 is an apocalyptic number.

It is an amenable number.

390664220337 is a deficient number, since it is larger than the sum of its proper divisors (173628542385).

390664220337 is a wasteful number, since it uses less digits than its factorization.

390664220337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43407135599 (or 43407135596 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 45.

The spelling of 390664220337 in words is "three hundred ninety billion, six hundred sixty-four million, two hundred twenty thousand, three hundred thirty-seven".