399425857328 has 20 divisors (see below), whose sum is σ = 774173144688. Its totient is φ = 199639239360.

The previous prime is 399425857289. The next prime is 399425857399. The reversal of 399425857328 is 823758524993.

It is a super-2 number, since 2×399425857328² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4560851 + ... + 4647602.

Almost surely, 2^399425857328 is an apocalyptic number.

It is an amenable number.

399425857328 is a deficient number, since it is larger than the sum of its proper divisors (374747287360).

399425857328 is a wasteful number, since it uses less digits than its factorization.

399425857328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9211172 (or 9211166 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 65.

The spelling of 399425857328 in words is "three hundred ninety-nine billion, four hundred twenty-five million, eight hundred fifty-seven thousand, three hundred twenty-eight".