399304377 has 8 divisors (see below), whose sum is σ = 591562080. Its totient is φ = 266202900.

The previous prime is 399304369. The next prime is 399304417. The reversal of 399304377 is 773403993.

It is not a de Polignac number, because 399304377 - 2³ = 399304369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399304307) 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, 7394499 + ... + 7394552.

It is an arithmetic number, because the mean of its divisors is an integer number (73945260).

Almost surely, 2^399304377 is an apocalyptic number.

It is an amenable number.

399304377 is a deficient number, since it is larger than the sum of its proper divisors (192257703).

399304377 is a wasteful number, since it uses less digits than its factorization.

399304377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14789060 (or 14789054 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 45.

The square root of 399304377 is about 19982.6018576160. The cubic root of 399304377 is about 736.3789357215.

The spelling of 399304377 in words is "three hundred ninety-nine million, three hundred four thousand, three hundred seventy-seven".