315854839 has 2 divisors, whose sum is σ = 315854840. Its totient is φ = 315854838.

The previous prime is 315854821. The next prime is 315854897. The reversal of 315854839 is 938458513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315854839 - 2¹⁷ = 315723767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315854809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157927419 + 157927420.

It is an arithmetic number, because the mean of its divisors is an integer number (157927420).

Almost surely, 2^315854839 is an apocalyptic number.

315854839 is a deficient number, since it is larger than the sum of its proper divisors (1).

315854839 is an equidigital number, since it uses as much as digits as its factorization.

315854839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 46.

The square root of 315854839 is about 17772.3053935048. The cubic root of 315854839 is about 681.0241480767.

The spelling of 315854839 in words is "three hundred fifteen million, eight hundred fifty-four thousand, eight hundred thirty-nine".