390704522 has 16 divisors (see below), whose sum is σ = 635380200. Its totient is φ = 179113152.

The previous prime is 390704513. The next prime is 390704527. The reversal of 390704522 is 225407093.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 111112681 + 279591841 = 10541^2 + 16721^2 .

It is a super-3 number, since 3×390704522³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (390704527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46553 + ... + 54300.

Almost surely, 2^390704522 is an apocalyptic number.

390704522 is a deficient number, since it is larger than the sum of its proper divisors (244675678).

390704522 is a wasteful number, since it uses less digits than its factorization.

390704522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101017.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 390704522 is about 19766.2470388286. The cubic root of 390704522 is about 731.0540362517.

The spelling of 390704522 in words is "three hundred ninety million, seven hundred four thousand, five hundred twenty-two".