86239189 has 2 divisors, whose sum is σ = 86239190. Its totient is φ = 86239188.

The previous prime is 86239169. The next prime is 86239201. The reversal of 86239189 is 98193268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 22638564 = 7975^2 + 4758^2 .

It is a cyclic number.

It is not a de Polignac number, because 86239189 - 2¹⁷ = 86108117 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 (86239169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43119594 + 43119595.

It is an arithmetic number, because the mean of its divisors is an integer number (43119595).

Almost surely, 2^86239189 is an apocalyptic number.

It is an amenable number.

86239189 is a deficient number, since it is larger than the sum of its proper divisors (1).

86239189 is an equidigital number, since it uses as much as digits as its factorization.

86239189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 86239189 is about 9286.5057475888. The cubic root of 86239189 is about 441.8093350578.

The spelling of 86239189 in words is "eighty-six million, two hundred thirty-nine thousand, one hundred eighty-nine".