86239169 has 2 divisors, whose sum is σ = 86239170. Its totient is φ = 86239168.

The previous prime is 86239163. The next prime is 86239189. The reversal of 86239169 is 96193268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54169600 + 32069569 = 7360^2 + 5663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86239169 is a prime.

It is a super-2 number, since 2×86239169² = 14874388539621122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86239163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43119584 + 43119585.

It is an arithmetic number, because the mean of its divisors is an integer number (43119585).

Almost surely, 2^86239169 is an apocalyptic number.

It is an amenable number.

86239169 is a deficient number, since it is larger than the sum of its proper divisors (1).

86239169 is an equidigital number, since it uses as much as digits as its factorization.

86239169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 86239169 is about 9286.5046707575. The cubic root of 86239169 is about 441.8093009040.

The spelling of 86239169 in words is "eighty-six million, two hundred thirty-nine thousand, one hundred sixty-nine".