91022943 has 16 divisors (see below), whose sum is σ = 132681600. Its totient is φ = 55046880.

The previous prime is 91022929. The next prime is 91022989. The reversal of 91022943 is 34922019.

It is not a de Polignac number, because 91022943 - 2⁴ = 91022927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91022943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91022843) 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 15 ways as a sum of consecutive naturals, for example, 14088 + ... + 19506.

It is an arithmetic number, because the mean of its divisors is an integer number (8292600).

Almost surely, 2^91022943 is an apocalyptic number.

91022943 is a deficient number, since it is larger than the sum of its proper divisors (41658657).

91022943 is a wasteful number, since it uses less digits than its factorization.

91022943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 91022943 is about 9540.5944783331. The cubic root of 91022943 is about 449.8319421829.

The spelling of 91022943 in words is "ninety-one million, twenty-two thousand, nine hundred forty-three".