399699336 has 32 divisors (see below), whose sum is σ = 1042695360. Its totient is φ = 127440192.

The previous prime is 399699331. The next prime is 399699347. The reversal of 399699336 is 633996993.

It is not an unprimeable number, because it can be changed into a prime (399699331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361495 + ... + 362598.

It is an arithmetic number, because the mean of its divisors is an integer number (32584230).

Almost surely, 2^399699336 is an apocalyptic number.

It is an amenable number.

399699336 is an abundant number, since it is smaller than the sum of its proper divisors (642996024).

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

399699336 is a wasteful number, since it uses less digits than its factorization.

399699336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724125 (or 724121 counting only the distinct ones).

The product of its digits is 6377292, while the sum is 57.

The square root of 399699336 is about 19992.4819869870. The cubic root of 399699336 is about 736.6216441799.

The spelling of 399699336 in words is "three hundred ninety-nine million, six hundred ninety-nine thousand, three hundred thirty-six".