399084 has 24 divisors (see below), whose sum is σ = 1064448. Its totient is φ = 114000.

The previous prime is 399079. The next prime is 399097. The reversal of 399084 is 480993.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2292 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2³⁹⁹⁰⁸⁴ is an apocalyptic number.

It is an amenable number.

399084 is an abundant number, since it is smaller than the sum of its proper divisors (665364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399084 is a wasteful number, since it uses less digits than its factorization.

399084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765 (or 4763 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 399084 is about 631.7309553916. The cubic root of 399084 is about 73.6243441052.

The spelling of 399084 in words is "three hundred ninety-nine thousand, eighty-four".