390138590 has 16 divisors (see below), whose sum is σ = 739210320. Its totient is φ = 147841920.

The previous prime is 390138569. The next prime is 390138601. The reversal of 390138590 is 95831093.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026491 + ... + 1026870.

It is an arithmetic number, because the mean of its divisors is an integer number (46200645).

Almost surely, 2^390138590 is an apocalyptic number.

390138590 is a deficient number, since it is larger than the sum of its proper divisors (349071730).

390138590 is a wasteful number, since it uses less digits than its factorization.

390138590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053387.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 390138590 is about 19751.9262351802. The cubic root of 390138590 is about 730.7008906132.

The spelling of 390138590 in words is "three hundred ninety million, one hundred thirty-eight thousand, five hundred ninety".