390946906 has 8 divisors (see below), whose sum is σ = 670194720. Its totient is φ = 167548668.

The previous prime is 390946889. The next prime is 390946937. The reversal of 390946906 is 609649093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13962376 + ... + 13962403.

It is an arithmetic number, because the mean of its divisors is an integer number (83774340).

Almost surely, 2^390946906 is an apocalyptic number.

390946906 is a deficient number, since it is larger than the sum of its proper divisors (279247814).

390946906 is a wasteful number, since it uses less digits than its factorization.

390946906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27924788.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 390946906 is about 19772.3773482098. The cubic root of 390946906 is about 731.2051813084.

The spelling of 390946906 in words is "three hundred ninety million, nine hundred forty-six thousand, nine hundred six".