91733089 has 8 divisors (see below), whose sum is σ = 106816320. Its totient is φ = 77144496.

The previous prime is 91733087. The next prime is 91733099. The reversal of 91733089 is 98033719.

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 91733089 - 2¹ = 91733087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91733087) 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, 123259 + ... + 124000.

It is an arithmetic number, because the mean of its divisors is an integer number (13352040).

Almost surely, 2^91733089 is an apocalyptic number.

It is an amenable number.

91733089 is a deficient number, since it is larger than the sum of its proper divisors (15083231).

91733089 is a wasteful number, since it uses less digits than its factorization.

91733089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247319.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 91733089 is about 9577.7392426397. The cubic root of 91733089 is about 450.9987512318.

The spelling of 91733089 in words is "ninety-one million, seven hundred thirty-three thousand, eighty-nine".