1109108 has 48 divisors (see below), whose sum is σ = 2615424. Its totient is φ = 397440.

The previous prime is 1109057. The next prime is 1109113. The reversal of 1109108 is 8019011.

It is a self number, because there is not a number n which added to its sum of digits gives 1109108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3866 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (54488).

2^1109108 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 1109108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307712).

1109108 is an abundant number, since it is smaller than the sum of its proper divisors (1506316).

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

1109108 is a wasteful number, since it uses less digits than its factorization.

1109108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1109108 is about 1053.1419657387. The cubic root of 1109108 is about 103.5121381052.

Subtracting 1109108 from its reverse (8019011), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1109108 in words is "one million, one hundred nine thousand, one hundred eight".