12809829 has 16 divisors (see below), whose sum is σ = 17600000. Its totient is φ = 8282736.

The previous prime is 12809813. The next prime is 12809843. The reversal of 12809829 is 92890821.

It is not a de Polignac number, because 12809829 - 2⁴ = 12809813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12809809) 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, 25422 + ... + 25920.

It is an arithmetic number, because the mean of its divisors is an integer number (1100000).

Almost surely, 2^12809829 is an apocalyptic number.

It is an amenable number.

12809829 is a deficient number, since it is larger than the sum of its proper divisors (4790171).

12809829 is a wasteful number, since it uses less digits than its factorization.

12809829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 12809829 is about 3579.0821449081. The cubic root of 12809829 is about 233.9812790925.

The spelling of 12809829 in words is "twelve million, eight hundred nine thousand, eight hundred twenty-nine".