79086691 has 8 divisors (see below), whose sum is σ = 80156160. Its totient is φ = 78024648.

The previous prime is 79086677. The next prime is 79086697. The reversal of 79086691 is 19668097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79086691 - 2⁵ = 79086659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79086697) 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 7 ways as a sum of consecutive naturals, for example, 21510 + ... + 24916.

It is an arithmetic number, because the mean of its divisors is an integer number (10019520).

Almost surely, 2^79086691 is an apocalyptic number.

79086691 is a deficient number, since it is larger than the sum of its proper divisors (1069469).

79086691 is a wasteful number, since it uses less digits than its factorization.

79086691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 79086691 is about 8893.0698299294. The cubic root of 79086691 is about 429.2409377519.

The spelling of 79086691 in words is "seventy-nine million, eighty-six thousand, six hundred ninety-one".