12902109 has 12 divisors (see below), whose sum is σ = 18909408. Its totient is φ = 7819240.

The previous prime is 12902077. The next prime is 12902117. The reversal of 12902109 is 90120921.

12902109 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 12902109 - 2⁵ = 12902077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12902189) 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, 17409 + ... + 18134.

It is an arithmetic number, because the mean of its divisors is an integer number (1575784).

Almost surely, 2^12902109 is an apocalyptic number.

It is an amenable number.

12902109 is a deficient number, since it is larger than the sum of its proper divisors (6007299).

12902109 is a wasteful number, since it uses less digits than its factorization.

12902109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35568 (or 35557 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 12902109 is about 3591.9505842926. The cubic root of 12902109 is about 234.5417901132.

The spelling of 12902109 in words is "twelve million, nine hundred two thousand, one hundred nine".