86430191 has 2 divisors, whose sum is σ = 86430192. Its totient is φ = 86430190.

The previous prime is 86430163. The next prime is 86430203. The reversal of 86430191 is 19103468.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86430191 - 2²⁶ = 19321327 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86430101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43215095 + 43215096.

It is an arithmetic number, because the mean of its divisors is an integer number (43215096).

Almost surely, 2^86430191 is an apocalyptic number.

86430191 is a deficient number, since it is larger than the sum of its proper divisors (1).

86430191 is an equidigital number, since it uses as much as digits as its factorization.

86430191 is an evil number, because the sum of its binary digits is even.

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

The square root of 86430191 is about 9296.7839062764. The cubic root of 86430191 is about 442.1352667083.

The spelling of 86430191 in words is "eighty-six million, four hundred thirty thousand, one hundred ninety-one".