12385989 has 48 divisors (see below), whose sum is σ = 22748544. Its totient is φ = 6307200.

The previous prime is 12385973. The next prime is 12386039. The reversal of 12385989 is 98958321.

It is a happy number.

12385989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12385989 - 2⁴ = 12385973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12385909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42127 + ... + 42419.

It is an arithmetic number, because the mean of its divisors is an integer number (473928).

Almost surely, 2^12385989 is an apocalyptic number.

It is an amenable number.

12385989 is a deficient number, since it is larger than the sum of its proper divisors (10362555).

12385989 is a wasteful number, since it uses less digits than its factorization.

12385989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 375 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 12385989 is about 3519.3733817258. The cubic root of 12385989 is about 231.3716959654.

It can be divided in two parts, 1238 and 5989, that added together give a palindrome (7227).

The spelling of 12385989 in words is "twelve million, three hundred eighty-five thousand, nine hundred eighty-nine".