91100116 has 12 divisors (see below), whose sum is σ = 159570432. Its totient is φ = 45508568.

The previous prime is 91100111. The next prime is 91100143. The reversal of 91100116 is 61100119.

It is a super-2 number, since 2×91100116² = 16598462270426912, which contains 22 as substring.

91100116 is a strobogrammatic number because it is the same when read upside-down.

It is a junction number, because it is equal to n+sod(n) for n = 91100093 and 91100102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91100111) 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, 5140 + ... + 14443.

It is an arithmetic number, because the mean of its divisors is an integer number (13297536).

Almost surely, 2^91100116 is an apocalyptic number.

It is an amenable number.

91100116 is a deficient number, since it is larger than the sum of its proper divisors (68470316).

91100116 is a wasteful number, since it uses less digits than its factorization.

91100116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20750 (or 20748 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 91100116 is about 9544.6380759042. The cubic root of 91100116 is about 449.9590349541.

The spelling of 91100116 in words is "ninety-one million, one hundred thousand, one hundred sixteen".