891108 has 48 divisors (see below), whose sum is σ = 2383360. Its totient is φ = 287712.

The previous prime is 891103. The next prime is 891133. The reversal of 891108 is 801198.

891108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 891108.

It is not an unprimeable number, because it can be changed into a prime (891101) by changing a digit.

891108 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3885 + ... + 4107.

2⁸⁹¹¹⁰⁸ 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 891108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1191680).

891108 is an abundant number, since it is smaller than the sum of its proper divisors (1492252).

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

891108 is a wasteful number, since it uses less digits than its factorization.

891108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 891108 is about 943.9851693750. The cubic root of 891108 is about 96.2299176632.

It can be divided in two parts, 891 and 108, that added together give a palindrome (999).

The spelling of 891108 in words is "eight hundred ninety-one thousand, one hundred eight".