315439289 has 4 divisors (see below), whose sum is σ = 344115600. Its totient is φ = 286762980.

The previous prime is 315439279. The next prime is 315439339. The reversal of 315439289 is 982934513.

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.

It is a cyclic number.

It is not a de Polignac number, because 315439289 - 2²⁴ = 298662073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315439279) 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, 14338139 + ... + 14338160.

It is an arithmetic number, because the mean of its divisors is an integer number (86028900).

Almost surely, 2^315439289 is an apocalyptic number.

It is an amenable number.

315439289 is a deficient number, since it is larger than the sum of its proper divisors (28676311).

315439289 is a wasteful number, since it uses less digits than its factorization.

315439289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28676310.

The product of its digits is 233280, while the sum is 44.

The square root of 315439289 is about 17760.6106032422. The cubic root of 315439289 is about 680.7253570408.

The spelling of 315439289 in words is "three hundred fifteen million, four hundred thirty-nine thousand, two hundred eighty-nine".