12489318 has 12 divisors (see below), whose sum is σ = 27060228. Its totient is φ = 4163100.

The previous prime is 12489317. The next prime is 12489319. The reversal of 12489318 is 81398421.

It is an interprime number because it is at equal distance from previous prime (12489317) and next prime (12489319).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489317) 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 5 ways as a sum of consecutive naturals, for example, 346908 + ... + 346943.

It is an arithmetic number, because the mean of its divisors is an integer number (2255019).

Almost surely, 2^12489318 is an apocalyptic number.

12489318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12489318 is an abundant number, since it is smaller than the sum of its proper divisors (14570910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12489318 is a wasteful number, since it uses less digits than its factorization.

12489318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693859 (or 693856 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 12489318 is about 3534.0229201294. The cubic root of 12489318 is about 232.0133142379.

The spelling of 12489318 in words is "twelve million, four hundred eighty-nine thousand, three hundred eighteen".