399000998 has 8 divisors (see below), whose sum is σ = 652910760. Its totient is φ = 181364080.

The previous prime is 399000983. The next prime is 399001027. The reversal of 399000998 is 899000993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9068183 + ... + 9068226.

It is an arithmetic number, because the mean of its divisors is an integer number (81613845).

Almost surely, 2^399000998 is an apocalyptic number.

399000998 is a deficient number, since it is larger than the sum of its proper divisors (253909762).

399000998 is a wasteful number, since it uses less digits than its factorization.

399000998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18136422.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 399000998 is about 19975.0093366687. The cubic root of 399000998 is about 736.1923958956.

The spelling of 399000998 in words is "three hundred ninety-nine million, nine hundred ninety-eight", and thus it is an aban number.