86316709 has 2 divisors, whose sum is σ = 86316710. Its totient is φ = 86316708.

The previous prime is 86316707. The next prime is 86316751. The reversal of 86316709 is 90761368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57426084 + 28890625 = 7578^2 + 5375^2 .

It is a cyclic number.

It is not a de Polignac number, because 86316709 - 2¹ = 86316707 is a prime.

Together with 86316707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86316707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43158354 + 43158355.

It is an arithmetic number, because the mean of its divisors is an integer number (43158355).

Almost surely, 2^86316709 is an apocalyptic number.

It is an amenable number.

86316709 is a deficient number, since it is larger than the sum of its proper divisors (1).

86316709 is an equidigital number, since it uses as much as digits as its factorization.

86316709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 86316709 is about 9290.6786081534. The cubic root of 86316709 is about 441.9416755211.

It can be divided in two parts, 86316 and 709, that added together give a square (87025 = 295²).

The spelling of 86316709 in words is "eighty-six million, three hundred sixteen thousand, seven hundred nine".