12909807 has 16 divisors (see below), whose sum is σ = 19260000. Its totient is φ = 8546112.

The previous prime is 12909773. The next prime is 12909833. The reversal of 12909807 is 70890921.

It is a happy number.

It is not a de Polignac number, because 12909807 - 2⁷ = 12909679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909887) 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, 2419 + ... + 5627.

It is an arithmetic number, because the mean of its divisors is an integer number (1203750).

Almost surely, 2^12909807 is an apocalyptic number.

12909807 is a deficient number, since it is larger than the sum of its proper divisors (6350193).

12909807 is a wasteful number, since it uses less digits than its factorization.

12909807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367 (or 3361 counting only the distinct ones).

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

The square root of 12909807 is about 3593.0219871301. The cubic root of 12909807 is about 234.5884270297.

The spelling of 12909807 in words is "twelve million, nine hundred nine thousand, eight hundred seven".