91191104 has 28 divisors (see below), whose sum is σ = 183148224. Its totient is φ = 45043584.

The previous prime is 91191101. The next prime is 91191131. The reversal of 91191104 is 40119119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91191101) 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, 3272 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (6541008).

Almost surely, 2^91191104 is an apocalyptic number.

It is an amenable number.

91191104 is an abundant number, since it is smaller than the sum of its proper divisors (91957120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91191104 is a wasteful number, since it uses less digits than its factorization.

91191104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17262 (or 17252 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 91191104 is about 9549.4033321459. The cubic root of 91191104 is about 450.1087868675.

The spelling of 91191104 in words is "ninety-one million, one hundred ninety-one thousand, one hundred four".