390249190 has 32 divisors (see below), whose sum is σ = 708722784. Its totient is φ = 154713600.

The previous prime is 390249179. The next prime is 390249191. The reversal of 390249190 is 91942093.

It is a super-2 number, since 2×390249190² = 304588860591312200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390249191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 972990 + ... + 973390.

It is an arithmetic number, because the mean of its divisors is an integer number (22147587).

Almost surely, 2^390249190 is an apocalyptic number.

390249190 is a deficient number, since it is larger than the sum of its proper divisors (318473594).

390249190 is a wasteful number, since it uses less digits than its factorization.

390249190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 390249190 is about 19754.7257637255. The cubic root of 390249190 is about 730.7699326451.

The spelling of 390249190 in words is "three hundred ninety million, two hundred forty-nine thousand, one hundred ninety".