390290650 has 24 divisors (see below), whose sum is σ = 728445564. Its totient is φ = 155577600.

The previous prime is 390290639. The next prime is 390290653. The reversal of 390290650 is 56092093.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 143832049 + 246458601 = 11993^2 + 15699^2 .

It is not an unprimeable number, because it can be changed into a prime (390290653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1330 + ... + 27970.

Almost surely, 2^390290650 is an apocalyptic number.

390290650 is a deficient number, since it is larger than the sum of its proper divisors (338154914).

390290650 is a wasteful number, since it uses less digits than its factorization.

390290650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946 (or 26941 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 390290650 is about 19755.7751050168. The cubic root of 390290650 is about 730.7958106818.

The spelling of 390290650 in words is "three hundred ninety million, two hundred ninety thousand, six hundred fifty".