91109106 has 24 divisors (see below), whose sum is σ = 215349264. Its totient is φ = 27608760.

The previous prime is 91109099. The next prime is 91109107. The reversal of 91109106 is 60190119.

It is a super-2 number, since 2×91109106² = 16601738392238472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91109106.

It is not an unprimeable number, because it can be changed into a prime (91109107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229876 + ... + 230271.

It is an arithmetic number, because the mean of its divisors is an integer number (8972886).

Almost surely, 2^91109106 is an apocalyptic number.

91109106 is an abundant number, since it is smaller than the sum of its proper divisors (124240158).

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

91109106 is a wasteful number, since it uses less digits than its factorization.

91109106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460166 (or 460163 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 91109106 is about 9545.1090093304. The cubic root of 91109106 is about 449.9738355158.

The spelling of 91109106 in words is "ninety-one million, one hundred nine thousand, one hundred six".