12738489 has 8 divisors (see below), whose sum is σ = 17532672. Its totient is φ = 8218320.

The previous prime is 12738469. The next prime is 12738499. The reversal of 12738489 is 98483721.

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

It is not a de Polignac number, because 12738489 - 2⁷ = 12738361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12738489.

It is not an unprimeable number, because it can be changed into a prime (12738419) 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, 68394 + ... + 68579.

It is an arithmetic number, because the mean of its divisors is an integer number (2191584).

Almost surely, 2^12738489 is an apocalyptic number.

It is an amenable number.

12738489 is a deficient number, since it is larger than the sum of its proper divisors (4794183).

12738489 is a wasteful number, since it uses less digits than its factorization.

12738489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137007.

The product of its digits is 96768, while the sum is 42.

The square root of 12738489 is about 3569.1019878956. The cubic root of 12738489 is about 233.5461104443.

The spelling of 12738489 in words is "twelve million, seven hundred thirty-eight thousand, four hundred eighty-nine".