109109 has 16 divisors (see below), whose sum is σ = 147840. Its totient is φ = 77760.

The previous prime is 109103. The next prime is 109111. The reversal of 109109 is 901901.

It is a cyclic number.

It is not a de Polignac number, because 109109 - 2¹⁶ = 43573 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947 + ... + 1055.

It is an arithmetic number, because the mean of its divisors is an integer number (9240).

2¹⁰⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

109109 is a deficient number, since it is larger than the sum of its proper divisors (38731).

109109 is a wasteful number, since it uses less digits than its factorization.

109109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 109109 is about 330.3165148763. The cubic root of 109109 is about 47.7844793596.

It can be divided in two parts, 10 and 9109, that added together give a palindrome (9119).

The spelling of 109109 in words is "one hundred nine thousand, one hundred nine".