399266 has 24 divisors (see below), whose sum is σ = 731520. Its totient is φ = 160056.

The previous prime is 399263. The next prime is 399271. The reversal of 399266 is 662993.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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 in 11 ways as a sum of consecutive naturals, for example, 5015 + ... + 5093.

It is an arithmetic number, because the mean of its divisors is an integer number (30480).

2³⁹⁹²⁶⁶ is an apocalyptic number.

399266 is a deficient number, since it is larger than the sum of its proper divisors (332254).

399266 is a wasteful number, since it uses less digits than its factorization.

399266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 107 counting only the distinct ones).

The product of its digits is 17496, while the sum is 35.

The square root of 399266 is about 631.8749876360. The cubic root of 399266 is about 73.6355343928.

The spelling of 399266 in words is "three hundred ninety-nine thousand, two hundred sixty-six".