390651312 has 20 divisors (see below), whose sum is σ = 1009182680. Its totient is φ = 130217088.

The previous prime is 390651311. The next prime is 390651319. The reversal of 390651312 is 213156093.

It is a self number, because there is not a number n which added to its sum of digits gives 390651312.

It is not an unprimeable number, because it can be changed into a prime (390651311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4069237 + ... + 4069332.

It is an arithmetic number, because the mean of its divisors is an integer number (50459134).

Almost surely, 2^390651312 is an apocalyptic number.

It is an amenable number.

390651312 is an abundant number, since it is smaller than the sum of its proper divisors (618531368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390651312 is a wasteful number, since it uses less digits than its factorization.

390651312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8138580 (or 8138574 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 390651312 is about 19764.9010116418. The cubic root of 390651312 is about 731.0208473590.

The spelling of 390651312 in words is "three hundred ninety million, six hundred fifty-one thousand, three hundred twelve".