390964497 has 32 divisors (see below), whose sum is σ = 659641344. Its totient is φ = 200059200.

The previous prime is 390964493. The next prime is 390964499. The reversal of 390964497 is 794469093.

It is not a de Polignac number, because 390964497 - 2² = 390964493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390964493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2847 + ... + 28107.

It is an arithmetic number, because the mean of its divisors is an integer number (20613792).

Almost surely, 2^390964497 is an apocalyptic number.

It is an amenable number.

390964497 is a deficient number, since it is larger than the sum of its proper divisors (268676847).

390964497 is a wasteful number, since it uses less digits than its factorization.

390964497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 390964497 is about 19772.8221809634. The cubic root of 390964497 is about 731.2161482174.

The spelling of 390964497 in words is "three hundred ninety million, nine hundred sixty-four thousand, four hundred ninety-seven".