91179359 has 4 divisors (see below), whose sum is σ = 93643704. Its totient is φ = 88715016.

The previous prime is 91179353. The next prime is 91179371. The reversal of 91179359 is 95397119.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91179359 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 (91179353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1232117 + ... + 1232190.

It is an arithmetic number, because the mean of its divisors is an integer number (23410926).

Almost surely, 2^91179359 is an apocalyptic number.

91179359 is a deficient number, since it is larger than the sum of its proper divisors (2464345).

91179359 is a wasteful number, since it uses less digits than its factorization.

91179359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464344.

The product of its digits is 76545, while the sum is 44.

The square root of 91179359 is about 9548.7883524560. The cubic root of 91179359 is about 450.0894620487.

The spelling of 91179359 in words is "ninety-one million, one hundred seventy-nine thousand, three hundred fifty-nine".