399365068 has 12 divisors (see below), whose sum is σ = 701377992. Its totient is φ = 198971360.

The previous prime is 399365059. The next prime is 399365069. The reversal of 399365068 is 860563993.

It is not an unprimeable number, because it can be changed into a prime (399365069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176530 + ... + 178777.

It is an arithmetic number, because the mean of its divisors is an integer number (58448166).

Almost surely, 2^399365068 is an apocalyptic number.

It is an amenable number.

399365068 is a deficient number, since it is larger than the sum of its proper divisors (302012924).

399365068 is a wasteful number, since it uses less digits than its factorization.

399365068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355592 (or 355590 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 399365068 is about 19984.1203959544. The cubic root of 399365068 is about 736.4162416904.

The spelling of 399365068 in words is "three hundred ninety-nine million, three hundred sixty-five thousand, sixty-eight".