315439 has 4 divisors (see below), whose sum is σ = 317680. Its totient is φ = 313200.

The previous prime is 315437. The next prime is 315449. The reversal of 315439 is 934513.

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 315439 - 2¹ = 315437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315437) 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, 894 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (79420).

2³¹⁵⁴³⁹ is an apocalyptic number.

315439 is a deficient number, since it is larger than the sum of its proper divisors (2241).

315439 is a wasteful number, since it uses less digits than its factorization.

315439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240.

The product of its digits is 1620, while the sum is 25.

The square root of 315439 is about 561.6395641334. The cubic root of 315439 is about 68.0725149151.

The spelling of 315439 in words is "three hundred fifteen thousand, four hundred thirty-nine".