399057416 has 16 divisors (see below), whose sum is σ = 749167440. Its totient is φ = 199279440.

The previous prime is 399057413. The next prime is 399057431. The reversal of 399057416 is 614750993.

It is not an unprimeable number, because it can be changed into a prime (399057413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24266 + ... + 37241.

It is an arithmetic number, because the mean of its divisors is an integer number (46822965).

Almost surely, 2^399057416 is an apocalyptic number.

It is an amenable number.

399057416 is a deficient number, since it is larger than the sum of its proper divisors (350110024).

399057416 is a wasteful number, since it uses less digits than its factorization.

399057416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62324 (or 62320 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 399057416 is about 19976.4215013600. The cubic root of 399057416 is about 736.2270930060.

The spelling of 399057416 in words is "three hundred ninety-nine million, fifty-seven thousand, four hundred sixteen".