316979009 has 2 divisors, whose sum is σ = 316979010. Its totient is φ = 316979008.

The previous prime is 316978993. The next prime is 316979017. The reversal of 316979009 is 900979613.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175297600 + 141681409 = 13240^2 + 11903^2 .

It is a cyclic number.

It is not a de Polignac number, because 316979009 - 2⁴ = 316978993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (316979029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158489504 + 158489505.

It is an arithmetic number, because the mean of its divisors is an integer number (158489505).

Almost surely, 2^316979009 is an apocalyptic number.

It is an amenable number.

316979009 is a deficient number, since it is larger than the sum of its proper divisors (1).

316979009 is an equidigital number, since it uses as much as digits as its factorization.

316979009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 316979009 is about 17803.9043189970. The cubic root of 316979009 is about 681.8311437153.

The spelling of 316979009 in words is "three hundred sixteen million, nine hundred seventy-nine thousand, nine".