86322191 has 2 divisors, whose sum is σ = 86322192. Its totient is φ = 86322190.

The previous prime is 86322161. The next prime is 86322217. The reversal of 86322191 is 19122368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86322191 - 2¹⁸ = 86060047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86322101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43161095 + 43161096.

It is an arithmetic number, because the mean of its divisors is an integer number (43161096).

Almost surely, 2^86322191 is an apocalyptic number.

86322191 is a deficient number, since it is larger than the sum of its proper divisors (1).

86322191 is an equidigital number, since it uses as much as digits as its factorization.

86322191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 86322191 is about 9290.9736303576. The cubic root of 86322191 is about 441.9510312723.

The spelling of 86322191 in words is "eighty-six million, three hundred twenty-two thousand, one hundred ninety-one".