86324891 has 2 divisors, whose sum is σ = 86324892. Its totient is φ = 86324890.

The previous prime is 86324857. The next prime is 86324893. The reversal of 86324891 is 19842368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86324891 - 2¹⁸ = 86062747 is a prime.

Together with 86324893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86324893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43162445 + 43162446.

It is an arithmetic number, because the mean of its divisors is an integer number (43162446).

Almost surely, 2^86324891 is an apocalyptic number.

86324891 is a deficient number, since it is larger than the sum of its proper divisors (1).

86324891 is an equidigital number, since it uses as much as digits as its factorization.

86324891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 86324891 is about 9291.1189315389. The cubic root of 86324891 is about 441.9556390305.

The spelling of 86324891 in words is "eighty-six million, three hundred twenty-four thousand, eight hundred ninety-one".