91382879 has 8 divisors (see below), whose sum is σ = 104642208. Its totient is φ = 78174720.

The previous prime is 91382873. The next prime is 91382903. The reversal of 91382879 is 97828319.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91382879 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 (91382873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8882 + ... + 16175.

It is an arithmetic number, because the mean of its divisors is an integer number (13080276).

Almost surely, 2^91382879 is an apocalyptic number.

91382879 is a deficient number, since it is larger than the sum of its proper divisors (13259329).

91382879 is a wasteful number, since it uses less digits than its factorization.

91382879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25585.

The product of its digits is 217728, while the sum is 47.

The square root of 91382879 is about 9559.4392617977. The cubic root of 91382879 is about 450.4240923792.

The spelling of 91382879 in words is "ninety-one million, three hundred eighty-two thousand, eight hundred seventy-nine".