390887280466 has 16 divisors (see below), whose sum is σ = 595922777856. Its totient is φ = 192270485376.

The previous prime is 390887280419. The next prime is 390887280499. The reversal of 390887280466 is 664082788093.

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, 6000186 + ... + 6064981.

It is an arithmetic number, because the mean of its divisors is an integer number (37245173616).

Almost surely, 2^390887280466 is an apocalyptic number.

390887280466 is a deficient number, since it is larger than the sum of its proper divisors (205035497390).

390887280466 is a wasteful number, since it uses less digits than its factorization.

390887280466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12065433.

The product of its (nonzero) digits is 27869184, while the sum is 61.

The spelling of 390887280466 in words is "three hundred ninety billion, eight hundred eighty-seven million, two hundred eighty thousand, four hundred sixty-six".