91078933 has 8 divisors (see below), whose sum is σ = 99560160. Its totient is φ = 82631280.

The previous prime is 91078909. The next prime is 91078943. The reversal of 91078933 is 33987019.

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 91078933 - 2¹³ = 91070741 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 (91078943) 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, 2535 + ... + 13732.

It is an arithmetic number, because the mean of its divisors is an integer number (12445020).

Almost surely, 2^91078933 is an apocalyptic number.

It is an amenable number.

91078933 is a deficient number, since it is larger than the sum of its proper divisors (8481227).

91078933 is a wasteful number, since it uses less digits than its factorization.

91078933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16787.

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

The square root of 91078933 is about 9543.5283307590. The cubic root of 91078933 is about 449.9241567654.

The spelling of 91078933 in words is "ninety-one million, seventy-eight thousand, nine hundred thirty-three".