399272208 has 40 divisors (see below), whose sum is σ = 1034555808. Its totient is φ = 132690432.

The previous prime is 399272201. The next prime is 399272221. The reversal of 399272208 is 802272993.

It is a self number, because there is not a number n which added to its sum of digits gives 399272208.

It is not an unprimeable number, because it can be changed into a prime (399272201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3835 + ... + 28517.

Almost surely, 2^399272208 is an apocalyptic number.

It is an amenable number.

399272208 is an abundant number, since it is smaller than the sum of its proper divisors (635283600).

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

399272208 is a wasteful number, since it uses less digits than its factorization.

399272208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25031 (or 25025 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 399272208 is about 19981.7969161935. The cubic root of 399272208 is about 736.3591603225.

The spelling of 399272208 in words is "three hundred ninety-nine million, two hundred seventy-two thousand, two hundred eight".