91222983 has 8 divisors (see below), whose sum is σ = 135145200. Its totient is φ = 60815304.

The previous prime is 91222973. The next prime is 91223021. The reversal of 91222983 is 38922219.

It is not a de Polignac number, because 91222983 - 2²⁰ = 90174407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91222903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1689288 + ... + 1689341.

It is an arithmetic number, because the mean of its divisors is an integer number (16893150).

Almost surely, 2^91222983 is an apocalyptic number.

91222983 is a deficient number, since it is larger than the sum of its proper divisors (43922217).

91222983 is a wasteful number, since it uses less digits than its factorization.

91222983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378638 (or 3378632 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 91222983 is about 9551.0723481712. The cubic root of 91222983 is about 450.1612311143.

The spelling of 91222983 in words is "ninety-one million, two hundred twenty-two thousand, nine hundred eighty-three".