12236889 has 32 divisors (see below), whose sum is σ = 19961856. Its totient is φ = 6508800.

The previous prime is 12236839. The next prime is 12236891. The reversal of 12236889 is 98863221.

12236889 = 816² + 817² + ... + 833².

It is a happy number.

It is not a de Polignac number, because 12236889 - 2⁷ = 12236761 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12236839) 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 31 ways as a sum of consecutive naturals, for example, 53794 + ... + 54020.

It is an arithmetic number, because the mean of its divisors is an integer number (623808).

Almost surely, 2^12236889 is an apocalyptic number.

It is an amenable number.

12236889 is a deficient number, since it is larger than the sum of its proper divisors (7724967).

12236889 is a wasteful number, since it uses less digits than its factorization.

12236889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

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

The square root of 12236889 is about 3498.1264985703. The cubic root of 12236889 is about 230.4395438432.

The spelling of 12236889 in words is "twelve million, two hundred thirty-six thousand, eight hundred eighty-nine".