91100016 has 90 divisors (see below), whose sum is σ = 296601552. Its totient is φ = 26026560.

The previous prime is 91099949. The next prime is 91100027. The reversal of 91100016 is 61000119.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 601 + ... + 13511.

Almost surely, 2^91100016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91100016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148300776).

91100016 is an abundant number, since it is smaller than the sum of its proper divisors (205501536).

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

91100016 is a wasteful number, since it uses less digits than its factorization.

91100016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939 (or 12923 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 91100016 is about 9544.6328373594. The cubic root of 91100016 is about 449.9588703150.

The spelling of 91100016 in words is "ninety-one million, one hundred thousand, sixteen".