390256394 has 16 divisors (see below), whose sum is σ = 647352000. Its totient is φ = 174958560.

The previous prime is 390256381. The next prime is 390256397. The reversal of 390256394 is 493652093.

It is not an unprimeable number, because it can be changed into a prime (390256397) 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, 119894 + ... + 123105.

It is an arithmetic number, because the mean of its divisors is an integer number (40459500).

Almost surely, 2^390256394 is an apocalyptic number.

390256394 is a deficient number, since it is larger than the sum of its proper divisors (257095606).

390256394 is a wasteful number, since it uses less digits than its factorization.

390256394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243085.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 390256394 is about 19754.9080990016. The cubic root of 390256394 is about 730.7744292884.

The spelling of 390256394 in words is "three hundred ninety million, two hundred fifty-six thousand, three hundred ninety-four".