12389145 has 16 divisors (see below), whose sum is σ = 20103552. Its totient is φ = 6513920.

The previous prime is 12389137. The next prime is 12389147. The reversal of 12389145 is 54198321.

12389145 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12389145 - 2³ = 12389137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12389147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4752 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (1256472).

Almost surely, 2^12389145 is an apocalyptic number.

12389145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12389145 is a deficient number, since it is larger than the sum of its proper divisors (7714407).

12389145 is a wasteful number, since it uses less digits than its factorization.

12389145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11712.

The product of its digits is 8640, while the sum is 33.

The square root of 12389145 is about 3519.8217284402. The cubic root of 12389145 is about 231.3913457773.

The spelling of 12389145 in words is "twelve million, three hundred eighty-nine thousand, one hundred forty-five".