12809907 has 30 divisors (see below), whose sum is σ = 21049644. Its totient is φ = 7757640.

The previous prime is 12809879. The next prime is 12809921. The reversal of 12809907 is 70990821.

It is a happy number.

It is not a de Polignac number, because 12809907 - 2⁶ = 12809843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12809957) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9148 + ... + 10454.

Almost surely, 2^12809907 is an apocalyptic number.

12809907 is a deficient number, since it is larger than the sum of its proper divisors (8239737).

12809907 is a wasteful number, since it uses less digits than its factorization.

12809907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 12809907 is about 3579.0930415400. The cubic root of 12809907 is about 233.9817540014.

The spelling of 12809907 in words is "twelve million, eight hundred nine thousand, nine hundred seven".