316999849 has 2 divisors, whose sum is σ = 316999850. Its totient is φ = 316999848.

The previous prime is 316999843. The next prime is 316999853. The reversal of 316999849 is 948999613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314423824 + 2576025 = 17732^2 + 1605^2 .

It is a cyclic number.

It is not a de Polignac number, because 316999849 - 2⁵ = 316999817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 316999793 and 316999802.

It is not a weakly prime, because it can be changed into another prime (316999843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158499924 + 158499925.

It is an arithmetic number, because the mean of its divisors is an integer number (158499925).

Almost surely, 2^316999849 is an apocalyptic number.

It is an amenable number.

316999849 is a deficient number, since it is larger than the sum of its proper divisors (1).

316999849 is an equidigital number, since it uses as much as digits as its factorization.

316999849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3779136, while the sum is 58.

The square root of 316999849 is about 17804.4895742619. The cubic root of 316999849 is about 681.8460858716.

The spelling of 316999849 in words is "three hundred sixteen million, nine hundred ninety-nine thousand, eight hundred forty-nine".