12809347 has 12 divisors (see below), whose sum is σ = 13753600. Its totient is φ = 11926656.

The previous prime is 12809327. The next prime is 12809351. The reversal of 12809347 is 74390821.

It is not a de Polignac number, because 12809347 - 2¹⁵ = 12776579 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12809317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36529 + ... + 36877.

Almost surely, 2^12809347 is an apocalyptic number.

12809347 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12809347 is a deficient number, since it is larger than the sum of its proper divisors (944253).

12809347 is a wasteful number, since it uses less digits than its factorization.

12809347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 12809347 is about 3579.0148085751. The cubic root of 12809347 is about 233.9783443568.

The spelling of 12809347 in words is "twelve million, eight hundred nine thousand, three hundred forty-seven".