86317009 has 2 divisors, whose sum is σ = 86317010. Its totient is φ = 86317008.

The previous prime is 86316899. The next prime is 86317027. The reversal of 86317009 is 90071368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85507009 + 810000 = 9247^2 + 900^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86317009 is a prime.

It is not a weakly prime, because it can be changed into another prime (86317069) 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 as a sum of consecutive naturals, namely, 43158504 + 43158505.

It is an arithmetic number, because the mean of its divisors is an integer number (43158505).

Almost surely, 2^86317009 is an apocalyptic number.

It is an amenable number.

86317009 is a deficient number, since it is larger than the sum of its proper divisors (1).

86317009 is an equidigital number, since it uses as much as digits as its factorization.

86317009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 86317009 is about 9290.6947533540. The cubic root of 86317009 is about 441.9421875206.

The spelling of 86317009 in words is "eighty-six million, three hundred seventeen thousand, nine".