12634989 has 8 divisors (see below), whose sum is σ = 16932960. Its totient is φ = 8380176.

The previous prime is 12634969. The next prime is 12635003. The reversal of 12634989 is 98943621.

12634989 is digitally balanced in base 2, because in such base 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 12634989 - 2⁷ = 12634861 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12634989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634969) 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, 10099 + ... + 11280.

It is an arithmetic number, because the mean of its divisors is an integer number (2116620).

Almost surely, 2^12634989 is an apocalyptic number.

It is an amenable number.

12634989 is a deficient number, since it is larger than the sum of its proper divisors (4297971).

12634989 is a wasteful number, since it uses less digits than its factorization.

12634989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21579.

The product of its digits is 93312, while the sum is 42.

The square root of 12634989 is about 3554.5729701330. The cubic root of 12634989 is about 232.9118702478.

The spelling of 12634989 in words is "twelve million, six hundred thirty-four thousand, nine hundred eighty-nine".