86009309 has 2 divisors, whose sum is σ = 86009310. Its totient is φ = 86009308.

The previous prime is 86009303. The next prime is 86009327. The reversal of 86009309 is 90390068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56957209 + 29052100 = 7547^2 + 5390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86009309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86009303) 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, 43004654 + 43004655.

It is an arithmetic number, because the mean of its divisors is an integer number (43004655).

Almost surely, 2^86009309 is an apocalyptic number.

It is an amenable number.

86009309 is a deficient number, since it is larger than the sum of its proper divisors (1).

86009309 is an equidigital number, since it uses as much as digits as its factorization.

86009309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 86009309 is about 9274.1203895572. The cubic root of 86009309 is about 441.4164220154.

The spelling of 86009309 in words is "eighty-six million, nine thousand, three hundred nine".