864339 has 16 divisors (see below), whose sum is σ = 1336320. Its totient is φ = 486720.

The previous prime is 864323. The next prime is 864341. The reversal of 864339 is 933468.

It is not a de Polignac number, because 864339 - 2⁴ = 864323 is a prime.

864339 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (864319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1399 + ... + 1919.

It is an arithmetic number, because the mean of its divisors is an integer number (83520).

2⁸⁶⁴³³⁹ is an apocalyptic number.

864339 is a deficient number, since it is larger than the sum of its proper divisors (471981).

864339 is a wasteful number, since it uses less digits than its factorization.

864339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610.

The product of its digits is 15552, while the sum is 33.

The square root of 864339 is about 929.6983381721. The cubic root of 864339 is about 95.2565181781.

The spelling of 864339 in words is "eight hundred sixty-four thousand, three hundred thirty-nine".