86394589 has 2 divisors, whose sum is σ = 86394590. Its totient is φ = 86394588.

The previous prime is 86394587. The next prime is 86394661. The reversal of 86394589 is 98549368.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82047364 + 4347225 = 9058^2 + 2085^2 .

It is a cyclic number.

It is not a de Polignac number, because 86394589 - 2¹ = 86394587 is a prime.

Together with 86394587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86394587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43197294 + 43197295.

It is an arithmetic number, because the mean of its divisors is an integer number (43197295).

Almost surely, 2^86394589 is an apocalyptic number.

It is an amenable number.

86394589 is a deficient number, since it is larger than the sum of its proper divisors (1).

86394589 is an equidigital number, since it uses as much as digits as its factorization.

86394589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 86394589 is about 9294.8689608837. The cubic root of 86394589 is about 442.0745508042.

The spelling of 86394589 in words is "eighty-six million, three hundred ninety-four thousand, five hundred eighty-nine".