390766158 has 24 divisors (see below), whose sum is σ = 856864008. Its totient is φ = 128685552.

The previous prime is 390766157. The next prime is 390766169. The reversal of 390766158 is 851667093.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390766157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129285 + ... + 132272.

It is an arithmetic number, because the mean of its divisors is an integer number (35702667).

Almost surely, 2^390766158 is an apocalyptic number.

390766158 is an abundant number, since it is smaller than the sum of its proper divisors (466097850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390766158 is a wasteful number, since it uses less digits than its factorization.

390766158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261648 (or 261645 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 390766158 is about 19767.8060998180. The cubic root of 390766158 is about 731.0924769614.

The spelling of 390766158 in words is "three hundred ninety million, seven hundred sixty-six thousand, one hundred fifty-eight".