86342239 has 2 divisors, whose sum is σ = 86342240. Its totient is φ = 86342238.

The previous prime is 86342233. The next prime is 86342273. The reversal of 86342239 is 93224368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86342239 - 2²⁵ = 52787807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86342198 and 86342207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86342233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43171119 + 43171120.

It is an arithmetic number, because the mean of its divisors is an integer number (43171120).

Almost surely, 2^86342239 is an apocalyptic number.

86342239 is a deficient number, since it is larger than the sum of its proper divisors (1).

86342239 is an equidigital number, since it uses as much as digits as its factorization.

86342239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 86342239 is about 9292.0524643375. The cubic root of 86342239 is about 441.9852424384.

The spelling of 86342239 in words is "eighty-six million, three hundred forty-two thousand, two hundred thirty-nine".