12804389 has 8 divisors (see below), whose sum is σ = 13853280. Its totient is φ = 11764656.

The previous prime is 12804377. The next prime is 12804397. The reversal of 12804389 is 98340821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12804389 - 2⁴ = 12804373 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 (12804359) 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, 782 + ... + 5120.

It is an arithmetic number, because the mean of its divisors is an integer number (1731660).

Almost surely, 2^12804389 is an apocalyptic number.

It is an amenable number.

12804389 is a deficient number, since it is larger than the sum of its proper divisors (1048891).

12804389 is a wasteful number, since it uses less digits than its factorization.

12804389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 12804389 is about 3578.3220928251. The cubic root of 12804389 is about 233.9481524889.

The spelling of 12804389 in words is "twelve million, eight hundred four thousand, three hundred eighty-nine".