316009789 has 2 divisors, whose sum is σ = 316009790. Its totient is φ = 316009788.

The previous prime is 316009783. The next prime is 316009823. The reversal of 316009789 is 987900613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187005625 + 129004164 = 13675^2 + 11358^2 .

It is a cyclic number.

It is not a de Polignac number, because 316009789 - 2²¹ = 313912637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316009783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158004894 + 158004895.

It is an arithmetic number, because the mean of its divisors is an integer number (158004895).

Almost surely, 2^316009789 is an apocalyptic number.

It is an amenable number.

316009789 is a deficient number, since it is larger than the sum of its proper divisors (1).

316009789 is an equidigital number, since it uses as much as digits as its factorization.

316009789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 316009789 is about 17776.6641696354. The cubic root of 316009789 is about 681.1354939943.

The spelling of 316009789 in words is "three hundred sixteen million, nine thousand, seven hundred eighty-nine".