399067056 has 60 divisors (see below), whose sum is σ = 1132162408. Its totient is φ = 131196672.

The previous prime is 399067033. The next prime is 399067069. The reversal of 399067056 is 650760993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8470 + ... + 29493.

Almost surely, 2^399067056 is an apocalyptic number.

399067056 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

399067056 is an abundant number, since it is smaller than the sum of its proper divisors (733095352).

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

399067056 is a wasteful number, since it uses less digits than its factorization.

399067056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38050 (or 38041 counting only the distinct ones).

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

The square root of 399067056 is about 19976.6627843592. The cubic root of 399067056 is about 736.2330212858.

The spelling of 399067056 in words is "three hundred ninety-nine million, sixty-seven thousand, fifty-six".