399268 has 6 divisors (see below), whose sum is σ = 698726. Its totient is φ = 199632.

The previous prime is 399263. The next prime is 399271. The reversal of 399268 is 862993.

It can be written as a sum of positive squares in only one way, i.e., 362404 + 36864 = 602^2 + 192^2 .

It is not an unprimeable number, because it can be changed into a prime (399263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49905 + ... + 49912.

2³⁹⁹²⁶⁸ is an apocalyptic number.

It is an amenable number.

399268 is a deficient number, since it is larger than the sum of its proper divisors (299458).

399268 is a wasteful number, since it uses less digits than its factorization.

399268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99821 (or 99819 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 399268 is about 631.8765702255. The cubic root of 399268 is about 73.6356573441.

The spelling of 399268 in words is "three hundred ninety-nine thousand, two hundred sixty-eight".