339809 has 4 divisors (see below), whose sum is σ = 341040. Its totient is φ = 338580.

The previous prime is 339799. The next prime is 339811. The reversal of 339809 is 908933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-339809 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 339809.

It is not an unprimeable number, because it can be changed into a prime (339839) 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, 14 + ... + 824.

It is an arithmetic number, because the mean of its divisors is an integer number (85260).

2³³⁹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

339809 is a deficient number, since it is larger than the sum of its proper divisors (1231).

339809 is an equidigital number, since it uses as much as digits as its factorization.

339809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 339809 is about 582.9313853276. The cubic root of 339809 is about 69.7822485051.

The spelling of 339809 in words is "three hundred thirty-nine thousand, eight hundred nine".