86137191 has 12 divisors (see below), whose sum is σ = 142194832. Its totient is φ = 49221216.

The previous prime is 86137169. The next prime is 86137199. The reversal of 86137191 is 19173168.

It is not a de Polignac number, because 86137191 - 2¹⁷ = 86006119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86137199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683566 + ... + 683691.

Almost surely, 2^86137191 is an apocalyptic number.

86137191 is a deficient number, since it is larger than the sum of its proper divisors (56057641).

86137191 is a wasteful number, since it uses less digits than its factorization.

86137191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367270 (or 1367267 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 86137191 is about 9281.0123908979. The cubic root of 86137191 is about 441.6350854045.

The spelling of 86137191 in words is "eighty-six million, one hundred thirty-seven thousand, one hundred ninety-one".