390840338 has 16 divisors (see below), whose sum is σ = 682655040. Its totient is φ = 164342256.

The previous prime is 390840323. The next prime is 390840349. The reversal of 390840338 is 833048093.

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, 262628 + ... + 264111.

It is an arithmetic number, because the mean of its divisors is an integer number (42665940).

Almost surely, 2^390840338 is an apocalyptic number.

390840338 is a deficient number, since it is larger than the sum of its proper divisors (291814702).

390840338 is a wasteful number, since it uses less digits than its factorization.

390840338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526801.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 390840338 is about 19769.6822938559. The cubic root of 390840338 is about 731.1387356658.

The spelling of 390840338 in words is "three hundred ninety million, eight hundred forty thousand, three hundred thirty-eight".