12826389 has 8 divisors (see below), whose sum is σ = 17127072. Its totient is φ = 8538320.

The previous prime is 12826379. The next prime is 12826391. The reversal of 12826389 is 98362821.

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 a de Polignac number, because none of the positive numbers 2^k-12826389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12826379) 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 7 ways as a sum of consecutive naturals, for example, 447 + ... + 5084.

It is an arithmetic number, because the mean of its divisors is an integer number (2140884).

Almost surely, 2^12826389 is an apocalyptic number.

It is an amenable number.

12826389 is a deficient number, since it is larger than the sum of its proper divisors (4300683).

12826389 is an equidigital number, since it uses as much as digits as its factorization.

12826389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6307.

The product of its digits is 41472, while the sum is 39.

The square root of 12826389 is about 3581.3948400030. The cubic root of 12826389 is about 234.0820626779.

The spelling of 12826389 in words is "twelve million, eight hundred twenty-six thousand, three hundred eighty-nine".