91879115 has 8 divisors (see below), whose sum is σ = 112062768. Its totient is φ = 72298080.

The previous prime is 91879093. The next prime is 91879127. The reversal of 91879115 is 51197819.

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

It is not a de Polignac number, because 91879115 - 2¹⁴ = 91862731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150317 + ... + 150926.

It is an arithmetic number, because the mean of its divisors is an integer number (14007846).

Almost surely, 2^91879115 is an apocalyptic number.

91879115 is a deficient number, since it is larger than the sum of its proper divisors (20183653).

91879115 is a wasteful number, since it uses less digits than its factorization.

91879115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301309.

The product of its digits is 22680, while the sum is 41.

The square root of 91879115 is about 9585.3594090154. The cubic root of 91879115 is about 451.2379329344.

The spelling of 91879115 in words is "ninety-one million, eight hundred seventy-nine thousand, one hundred fifteen".