315369449 has 2 divisors, whose sum is σ = 315369450. Its totient is φ = 315369448.

The previous prime is 315369443. The next prime is 315369487. The reversal of 315369449 is 944963513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299047849 + 16321600 = 17293^2 + 4040^2 .

It is a cyclic number.

It is not a de Polignac number, because 315369449 - 2¹² = 315365353 is a prime.

It is not a weakly prime, because it can be changed into another prime (315369443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157684724 + 157684725.

It is an arithmetic number, because the mean of its divisors is an integer number (157684725).

Almost surely, 2^315369449 is an apocalyptic number.

It is an amenable number.

315369449 is a deficient number, since it is larger than the sum of its proper divisors (1).

315369449 is an equidigital number, since it uses as much as digits as its factorization.

315369449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 44.

The square root of 315369449 is about 17758.6443457827. The cubic root of 315369449 is about 680.6751145486.

The spelling of 315369449 in words is "three hundred fifteen million, three hundred sixty-nine thousand, four hundred forty-nine".