399244 has 12 divisors (see below), whose sum is σ = 704368. Its totient is φ = 198000.

The previous prime is 399241. The next prime is 399263. The reversal of 399244 is 442993.

It is a super-3 number, since 3×399244³ = 190913416233356352, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (399241) 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, 274 + ... + 934.

2³⁹⁹²⁴⁴ is an apocalyptic number.

It is an amenable number.

399244 is a deficient number, since it is larger than the sum of its proper divisors (305124).

399244 is a wasteful number, since it uses less digits than its factorization.

399244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 814 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 399244 is about 631.8575788894. The cubic root of 399244 is about 73.6341819013.

The spelling of 399244 in words is "three hundred ninety-nine thousand, two hundred forty-four".