12809137 has 16 divisors (see below), whose sum is σ = 14712192. Its totient is φ = 11038720.

The previous prime is 12809131. The next prime is 12809149. The reversal of 12809137 is 73190821.

It is not a de Polignac number, because 12809137 - 2³ = 12809129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12809099 and 12809108.

It is not an unprimeable number, because it can be changed into a prime (12809131) 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 15 ways as a sum of consecutive naturals, for example, 49713 + ... + 49969.

It is an arithmetic number, because the mean of its divisors is an integer number (919512).

Almost surely, 2^12809137 is an apocalyptic number.

It is an amenable number.

12809137 is a deficient number, since it is larger than the sum of its proper divisors (1903055).

12809137 is a wasteful number, since it uses less digits than its factorization.

12809137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12809137 is about 3578.9854707724. The cubic root of 12809137 is about 233.9770657144.

Adding to 12809137 its reverse (73190821), we get a palindrome (85999958).

The spelling of 12809137 in words is "twelve million, eight hundred nine thousand, one hundred thirty-seven".