12945489 has 8 divisors (see below), whose sum is σ = 17291520. Its totient is φ = 8614896.

The previous prime is 12945469. The next prime is 12945511. The reversal of 12945489 is 98454921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12945489 - 2⁹ = 12944977 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12945489.

It is not an unprimeable number, because it can be changed into a prime (12945419) 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, 1734 + ... + 5375.

It is an arithmetic number, because the mean of its divisors is an integer number (2161440).

Almost surely, 2^12945489 is an apocalyptic number.

It is an amenable number.

12945489 is a deficient number, since it is larger than the sum of its proper divisors (4346031).

12945489 is an equidigital number, since it uses as much as digits as its factorization.

12945489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7719.

The product of its digits is 103680, while the sum is 42.

The square root of 12945489 is about 3597.9840188639. The cubic root of 12945489 is about 234.8043580690.

The spelling of 12945489 in words is "twelve million, nine hundred forty-five thousand, four hundred eighty-nine".