12168909 has 12 divisors (see below), whose sum is σ = 18341856. Its totient is φ = 7759752.

The previous prime is 12168907. The next prime is 12168917. The reversal of 12168909 is 90986121.

12168909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12168909 - 2¹ = 12168907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12168901) 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, 29187 + ... + 29600.

It is an arithmetic number, because the mean of its divisors is an integer number (1528488).

Almost surely, 2^12168909 is an apocalyptic number.

It is an amenable number.

12168909 is a deficient number, since it is larger than the sum of its proper divisors (6172947).

12168909 is a wasteful number, since it uses less digits than its factorization.

12168909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58816 (or 58813 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 12168909 is about 3488.3963364274. The cubic root of 12168909 is about 230.0120283564.

It can be divided in two parts, 12 and 168909, that added together give a square (168921 = 411²).

The spelling of 12168909 in words is "twelve million, one hundred sixty-eight thousand, nine hundred nine".