86179491 has 16 divisors (see below), whose sum is σ = 128072320. Its totient is φ = 57273480.

The previous prime is 86179469. The next prime is 86179507. The reversal of 86179491 is 19497168.

It is a happy number.

It is not a de Polignac number, because 86179491 - 2⁶ = 86179427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86179591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116 + ... + 13758.

It is an arithmetic number, because the mean of its divisors is an integer number (8004520).

Almost surely, 2^86179491 is an apocalyptic number.

86179491 is a deficient number, since it is larger than the sum of its proper divisors (41892829).

86179491 is a wasteful number, since it uses less digits than its factorization.

86179491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983 (or 9977 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 86179491 is about 9283.2909574138. The cubic root of 86179491 is about 441.7073658630.

The spelling of 86179491 in words is "eighty-six million, one hundred seventy-nine thousand, four hundred ninety-one".