91216883 has 8 divisors (see below), whose sum is σ = 97008480. Its totient is φ = 85472640.

The previous prime is 91216871. The next prime is 91216907. The reversal of 91216883 is 38861219.

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 91216883 - 2²⁴ = 74439667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91216823) 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, 7823 + ... + 15608.

It is an arithmetic number, because the mean of its divisors is an integer number (12126060).

Almost surely, 2^91216883 is an apocalyptic number.

91216883 is a deficient number, since it is larger than the sum of its proper divisors (5791597).

91216883 is a wasteful number, since it uses less digits than its factorization.

91216883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23677.

The product of its digits is 20736, while the sum is 38.

The square root of 91216883 is about 9550.7530069623. The cubic root of 91216883 is about 450.1511969298.

The spelling of 91216883 in words is "ninety-one million, two hundred sixteen thousand, eight hundred eighty-three".