86396239 has 2 divisors, whose sum is σ = 86396240. Its totient is φ = 86396238.

The previous prime is 86396231. The next prime is 86396267. The reversal of 86396239 is 93269368.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86396239 - 2³ = 86396231 is a prime.

It is a super-2 number, since 2×86396239² = 14928620226690242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86396231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43198119 + 43198120.

It is an arithmetic number, because the mean of its divisors is an integer number (43198120).

Almost surely, 2^86396239 is an apocalyptic number.

86396239 is a deficient number, since it is larger than the sum of its proper divisors (1).

86396239 is an equidigital number, since it uses as much as digits as its factorization.

86396239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 86396239 is about 9294.9577191077. The cubic root of 86396239 is about 442.0773650945.

It can be divided in two parts, 8639 and 6239, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 86396239 in words is "eighty-six million, three hundred ninety-six thousand, two hundred thirty-nine".