399286 has 8 divisors (see below), whose sum is σ = 602784. Its totient is φ = 198360.

The previous prime is 399283. The next prime is 399353. The reversal of 399286 is 682993.

399286 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190 + ... + 913.

It is an arithmetic number, because the mean of its divisors is an integer number (75348).

2³⁹⁹²⁸⁶ is an apocalyptic number.

399286 is a deficient number, since it is larger than the sum of its proper divisors (203498).

399286 is a wasteful number, since it uses less digits than its factorization.

399286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

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

The square root of 399286 is about 631.8908133531. The cubic root of 399286 is about 73.6367638873.

The spelling of 399286 in words is "three hundred ninety-nine thousand, two hundred eighty-six".