399606008 has 64 divisors (see below), whose sum is σ = 792529920. Its totient is φ = 188697600.

The previous prime is 399606007. The next prime is 399606019. The reversal of 399606008 is 800606993.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399606007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207678 + ... + 2207858.

It is an arithmetic number, because the mean of its divisors is an integer number (12383280).

Almost surely, 2^399606008 is an apocalyptic number.

It is an amenable number.

399606008 is a deficient number, since it is larger than the sum of its proper divisors (392923912).

399606008 is a wasteful number, since it uses less digits than its factorization.

399606008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 399606008 is about 19990.1477733407. The cubic root of 399606008 is about 736.5643071017.

The spelling of 399606008 in words is "three hundred ninety-nine million, six hundred six thousand, eight".