315946399 has 2 divisors, whose sum is σ = 315946400. Its totient is φ = 315946398.

The previous prime is 315946381. The next prime is 315946403. The reversal of 315946399 is 993649513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315946399 - 2⁹ = 315945887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315946349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157973199 + 157973200.

It is an arithmetic number, because the mean of its divisors is an integer number (157973200).

Almost surely, 2^315946399 is an apocalyptic number.

315946399 is a deficient number, since it is larger than the sum of its proper divisors (1).

315946399 is an equidigital number, since it uses as much as digits as its factorization.

315946399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 49.

The square root of 315946399 is about 17774.8811247783. The cubic root of 315946399 is about 681.0899468121.

The spelling of 315946399 in words is "three hundred fifteen million, nine hundred forty-six thousand, three hundred ninety-nine".