315749999 has 12 divisors (see below), whose sum is σ = 344284200. Its totient is φ = 288435168.

The previous prime is 315749981. The next prime is 315750007. The reversal of 315749999 is 999947513.

It is not a de Polignac number, because 315749999 - 2²⁰ = 314701423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315749939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416729 + ... + 417485.

It is an arithmetic number, because the mean of its divisors is an integer number (28690350).

Almost surely, 2^315749999 is an apocalyptic number.

315749999 is a deficient number, since it is larger than the sum of its proper divisors (28534201).

315749999 is an frugal number, since it uses more digits than its factorization.

315749999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 805 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 56.

The square root of 315749999 is about 17769.3556157785. The cubic root of 315749999 is about 680.9487901760.

The spelling of 315749999 in words is "three hundred fifteen million, seven hundred forty-nine thousand, nine hundred ninety-nine".