399268134 has 12 divisors (see below), whose sum is σ = 865080996. Its totient is φ = 133089372.

The previous prime is 399268117. The next prime is 399268169. The reversal of 399268134 is 431862993.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 399268134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11090764 + ... + 11090799.

It is an arithmetic number, because the mean of its divisors is an integer number (72090083).

Almost surely, 2^399268134 is an apocalyptic number.

399268134 is an abundant number, since it is smaller than the sum of its proper divisors (465812862).

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

399268134 is a wasteful number, since it uses less digits than its factorization.

399268134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22181571 (or 22181568 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 399268134 is about 19981.6949731498. The cubic root of 399268134 is about 736.3566558178.

The spelling of 399268134 in words is "three hundred ninety-nine million, two hundred sixty-eight thousand, one hundred thirty-four".