86192391 has 4 divisors (see below), whose sum is σ = 114923192. Its totient is φ = 57461592.

The previous prime is 86192377. The next prime is 86192413. The reversal of 86192391 is 19329168.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86192391 - 2¹³ = 86184199 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 (86192311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14365396 + ... + 14365401.

It is an arithmetic number, because the mean of its divisors is an integer number (28730798).

Almost surely, 2^86192391 is an apocalyptic number.

86192391 is a deficient number, since it is larger than the sum of its proper divisors (28730801).

86192391 is a wasteful number, since it uses less digits than its factorization.

86192391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28730800.

The product of its digits is 23328, while the sum is 39.

The square root of 86192391 is about 9283.9857281235. The cubic root of 86192391 is about 441.7294041333.

The spelling of 86192391 in words is "eighty-six million, one hundred ninety-two thousand, three hundred ninety-one".