399113706 has 16 divisors (see below), whose sum is σ = 798634944. Its totient is φ = 132969984.

The previous prime is 399113699. The next prime is 399113711. The reversal of 399113706 is 607311993.

It is a Curzon 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, 3415 + ... + 28458.

It is an arithmetic number, because the mean of its divisors is an integer number (49914684).

Almost surely, 2^399113706 is an apocalyptic number.

399113706 is an abundant number, since it is smaller than the sum of its proper divisors (399521238).

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

399113706 is a wasteful number, since it uses less digits than its factorization.

399113706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33965.

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 399113706 is about 19977.8303626795. The cubic root of 399113706 is about 736.2617081374.

The spelling of 399113706 in words is "three hundred ninety-nine million, one hundred thirteen thousand, seven hundred six".