91955883 has 4 divisors (see below), whose sum is σ = 122607848. Its totient is φ = 61303920.

The previous prime is 91955869. The next prime is 91955891. The reversal of 91955883 is 38855919.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38855919 = 3 ⋅12951973.

It is not a de Polignac number, because 91955883 - 2⁶ = 91955819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91955803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15325978 + ... + 15325983.

It is an arithmetic number, because the mean of its divisors is an integer number (30651962).

Almost surely, 2^91955883 is an apocalyptic number.

91955883 is a deficient number, since it is larger than the sum of its proper divisors (30651965).

91955883 is a wasteful number, since it uses less digits than its factorization.

91955883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30651964.

The product of its digits is 388800, while the sum is 48.

The square root of 91955883 is about 9589.3630132559. The cubic root of 91955883 is about 451.3635726235.

The spelling of 91955883 in words is "ninety-one million, nine hundred fifty-five thousand, eight hundred eighty-three".