390520790 has 16 divisors (see below), whose sum is σ = 766841040. Its totient is φ = 142007520.

The previous prime is 390520769. The next prime is 390520807. The reversal of 390520790 is 97025093.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 390520790.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774985 + ... + 1775204.

It is an arithmetic number, because the mean of its divisors is an integer number (47927565).

Almost surely, 2^390520790 is an apocalyptic number.

390520790 is a deficient number, since it is larger than the sum of its proper divisors (376320250).

390520790 is a wasteful number, since it uses less digits than its factorization.

390520790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550207.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 390520790 is about 19761.5988725609. The cubic root of 390520790 is about 730.9394235688.

The spelling of 390520790 in words is "three hundred ninety million, five hundred twenty thousand, seven hundred ninety".