12808869 has 8 divisors (see below), whose sum is σ = 17977440. Its totient is φ = 8089776.

The previous prime is 12808853. The next prime is 12808891. The reversal of 12808869 is 96880821.

12808869 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12808869 - 2⁴ = 12808853 is a prime.

It is a super-2 number, since 2×12808869² = 328134250118322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12808869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12808819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112302 + ... + 112415.

It is an arithmetic number, because the mean of its divisors is an integer number (2247180).

Almost surely, 2^12808869 is an apocalyptic number.

12808869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12808869 is a deficient number, since it is larger than the sum of its proper divisors (5168571).

12808869 is a wasteful number, since it uses less digits than its factorization.

12808869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224739.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 12808869 is about 3578.9480297987. The cubic root of 12808869 is about 233.9754339029.

The spelling of 12808869 in words is "twelve million, eight hundred eight thousand, eight hundred sixty-nine".