399320862 has 16 divisors (see below), whose sum is σ = 800658192. Its totient is φ = 132770880.

The previous prime is 399320851. The next prime is 399320879. The reversal of 399320862 is 268023993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81439 + ... + 86202.

It is an arithmetic number, because the mean of its divisors is an integer number (50041137).

Almost surely, 2^399320862 is an apocalyptic number.

399320862 is an abundant number, since it is smaller than the sum of its proper divisors (401337330).

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

399320862 is a wasteful number, since it uses less digits than its factorization.

399320862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168043.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 399320862 is about 19983.0143371815. The cubic root of 399320862 is about 736.3890692107.

The spelling of 399320862 in words is "three hundred ninety-nine million, three hundred twenty thousand, eight hundred sixty-two".