315448394 has 4 divisors (see below), whose sum is σ = 473172594. Its totient is φ = 157724196.

The previous prime is 315448327. The next prime is 315448411. The reversal of 315448394 is 493844513.

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

It can be written as a sum of positive squares in only one way, i.e., 302307769 + 13140625 = 17387^2 + 3625^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78862097 + ... + 78862100.

Almost surely, 2^315448394 is an apocalyptic number.

315448394 is a deficient number, since it is larger than the sum of its proper divisors (157724200).

315448394 is a wasteful number, since it uses less digits than its factorization.

315448394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157724199.

The product of its digits is 207360, while the sum is 41.

The square root of 315448394 is about 17760.8669270393. The cubic root of 315448394 is about 680.7319065787.

The spelling of 315448394 in words is "three hundred fifteen million, four hundred forty-eight thousand, three hundred ninety-four".