399375990488 has 32 divisors (see below), whose sum is σ = 750650598000. Its totient is φ = 199203085440.

The previous prime is 399375990469. The next prime is 399375990509. The reversal of 399375990488 is 884099573993.

It is a congruent 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, 5527298 + ... + 5599086.

Almost surely, 2^399375990488 is an apocalyptic number.

It is an amenable number.

399375990488 is a deficient number, since it is larger than the sum of its proper divisors (351274607512).

399375990488 is a wasteful number, since it uses less digits than its factorization.

399375990488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73475 (or 73471 counting only the distinct ones).

The product of its (nonzero) digits is 529079040, while the sum is 74.

The spelling of 399375990488 in words is "three hundred ninety-nine billion, three hundred seventy-five million, nine hundred ninety thousand, four hundred eighty-eight".