12808917 has 24 divisors (see below), whose sum is σ = 20386080. Its totient is φ = 7685280.

The previous prime is 12808903. The next prime is 12808937. The reversal of 12808917 is 71980821.

It is not a de Polignac number, because 12808917 - 2⁶ = 12808853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10198 + ... + 11384.

It is an arithmetic number, because the mean of its divisors is an integer number (849420).

Almost surely, 2^12808917 is an apocalyptic number.

It is an amenable number.

12808917 is a deficient number, since it is larger than the sum of its proper divisors (7577163).

12808917 is a wasteful number, since it uses less digits than its factorization.

12808917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12808917 is about 3578.9547356735. The cubic root of 12808917 is about 233.9757261693.

The spelling of 12808917 in words is "twelve million, eight hundred eight thousand, nine hundred seventeen".