86147309 has 2 divisors, whose sum is σ = 86147310. Its totient is φ = 86147308.

The previous prime is 86147297. The next prime is 86147329. The reversal of 86147309 is 90374168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84584809 + 1562500 = 9197^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 86147309 - 2²⁰ = 85098733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86147329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43073654 + 43073655.

It is an arithmetic number, because the mean of its divisors is an integer number (43073655).

Almost surely, 2^86147309 is an apocalyptic number.

It is an amenable number.

86147309 is a deficient number, since it is larger than the sum of its proper divisors (1).

86147309 is an equidigital number, since it uses as much as digits as its factorization.

86147309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 86147309 is about 9281.5574662876. The cubic root of 86147309 is about 441.6523767696.

The spelling of 86147309 in words is "eighty-six million, one hundred forty-seven thousand, three hundred nine".