319939 has 4 divisors (see below), whose sum is σ = 328624. Its totient is φ = 311256.

The previous prime is 319937. The next prime is 319967. The reversal of 319939 is 939913.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 319939 - 2¹ = 319937 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 319939.

It is not an unprimeable number, because it can be changed into a prime (319931) 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, 4287 + ... + 4360.

It is an arithmetic number, because the mean of its divisors is an integer number (82156).

2³¹⁹⁹³⁹ is an apocalyptic number.

319939 is a deficient number, since it is larger than the sum of its proper divisors (8685).

319939 is an equidigital number, since it uses as much as digits as its factorization.

319939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8684.

The product of its digits is 6561, while the sum is 34.

The square root of 319939 is about 565.6315054875. The cubic root of 319939 is about 68.3946914020.

The spelling of 319939 in words is "three hundred nineteen thousand, nine hundred thirty-nine".