390967506 has 16 divisors (see below), whose sum is σ = 868816800. Its totient is φ = 130322484.

The previous prime is 390967469. The next prime is 390967519. The reversal of 390967506 is 605769093.

It is a Curzon 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, 3620016 + ... + 3620123.

It is an arithmetic number, because the mean of its divisors is an integer number (54301050).

Almost surely, 2^390967506 is an apocalyptic number.

390967506 is an abundant number, since it is smaller than the sum of its proper divisors (477849294).

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

390967506 is a wasteful number, since it uses less digits than its factorization.

390967506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240150 (or 7240144 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 390967506 is about 19772.8982701070. The cubic root of 390967506 is about 731.2180241113.

The spelling of 390967506 in words is "three hundred ninety million, nine hundred sixty-seven thousand, five hundred six".