315899999 has 4 divisors (see below), whose sum is σ = 316448064. Its totient is φ = 315351936.

The previous prime is 315899939. The next prime is 315900049. The reversal of 315899999 is 999998513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999998513 = 1583 ⋅631711.

It is a cyclic number.

It is not a de Polignac number, because 315899999 - 2¹² = 315895903 is a prime.

It is a Duffinian number.

315899999 is a modest number, since divided by 99999 gives 3158 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315899939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273167 + ... + 274320.

It is an arithmetic number, because the mean of its divisors is an integer number (79112016).

Almost surely, 2^315899999 is an apocalyptic number.

315899999 is a deficient number, since it is larger than the sum of its proper divisors (548065).

315899999 is an equidigital number, since it uses as much as digits as its factorization.

315899999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548064.

The product of its digits is 7085880, while the sum is 62.

The square root of 315899999 is about 17773.5758641867. The cubic root of 315899999 is about 681.0566034762.

The spelling of 315899999 in words is "three hundred fifteen million, eight hundred ninety-nine thousand, nine hundred ninety-nine".