390426765 has 16 divisors (see below), whose sum is σ = 625495488. Its totient is φ = 207956736.

The previous prime is 390426733. The next prime is 390426787. The reversal of 390426765 is 567624093.

It is not a de Polignac number, because 390426765 - 2⁵ = 390426733 is a prime.

It is a congruent number.

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, 4732 + ... + 28341.

It is an arithmetic number, because the mean of its divisors is an integer number (39093468).

Almost surely, 2^390426765 is an apocalyptic number.

It is an amenable number.

390426765 is a deficient number, since it is larger than the sum of its proper divisors (235068723).

390426765 is a wasteful number, since it uses less digits than its factorization.

390426765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33868.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 390426765 is about 19759.2197467410. The cubic root of 390426765 is about 730.8807565294.

The spelling of 390426765 in words is "three hundred ninety million, four hundred twenty-six thousand, seven hundred sixty-five".