91089112 has 8 divisors (see below), whose sum is σ = 170792100. Its totient is φ = 45544552.

The previous prime is 91089109. The next prime is 91089121. The reversal of 91089112 is 21198019.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5693062 + ... + 5693077.

Almost surely, 2^91089112 is an apocalyptic number.

It is an amenable number.

91089112 is a deficient number, since it is larger than the sum of its proper divisors (79702988).

91089112 is a wasteful number, since it uses less digits than its factorization.

91089112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11386145 (or 11386141 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 91089112 is about 9544.0616091892. The cubic root of 91089112 is about 449.9409173460.

The spelling of 91089112 in words is "ninety-one million, eighty-nine thousand, one hundred twelve".