390394730 has 32 divisors (see below), whose sum is σ = 767413440. Its totient is φ = 141809920.

The previous prime is 390394699. The next prime is 390394757. The reversal of 390394730 is 37493093.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182306 + ... + 184434.

It is an arithmetic number, because the mean of its divisors is an integer number (23981670).

Almost surely, 2^390394730 is an apocalyptic number.

390394730 is a deficient number, since it is larger than the sum of its proper divisors (377018710).

390394730 is a wasteful number, since it uses less digits than its factorization.

390394730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 390394730 is about 19758.4090958761. The cubic root of 390394730 is about 730.8607660920.

The spelling of 390394730 in words is "three hundred ninety million, three hundred ninety-four thousand, seven hundred thirty".