319439 has 2 divisors, whose sum is σ = 319440. Its totient is φ = 319438.

The previous prime is 319433. The next prime is 319441. The reversal of 319439 is 934913.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 319439 - 2⁸ = 319183 is a prime.

Together with 319441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159719 + 159720.

It is an arithmetic number, because the mean of its divisors is an integer number (159720).

2³¹⁹⁴³⁹ is an apocalyptic number.

319439 is a deficient number, since it is larger than the sum of its proper divisors (1).

319439 is an equidigital number, since it uses as much as digits as its factorization.

319439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 29.

The square root of 319439 is about 565.1893488027. The cubic root of 319439 is about 68.3590437987.

It can be divided in two parts, 319 and 439, that multiplied together give a palindrome (140041).

The spelling of 319439 in words is "three hundred nineteen thousand, four hundred thirty-nine".