1108989 has 24 divisors (see below), whose sum is σ = 1896960. Its totient is φ = 610848.

The previous prime is 1108967. The next prime is 1108993. The reversal of 1108989 is 9898011.

It is not a de Polignac number, because 1108989 - 2⁵ = 1108957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1524 + ... + 2130.

It is an arithmetic number, because the mean of its divisors is an integer number (79040).

2^1108989 is an apocalyptic number.

It is an amenable number.

1108989 is a deficient number, since it is larger than the sum of its proper divisors (787971).

1108989 is a wasteful number, since it uses less digits than its factorization.

1108989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 1108989 is about 1053.0854666170. The cubic root of 1108989 is about 103.5084359154.

The spelling of 1108989 in words is "one million, one hundred eight thousand, nine hundred eighty-nine".