12726489 has 8 divisors (see below), whose sum is σ = 17966880. Its totient is φ = 7985216.

The previous prime is 12726479. The next prime is 12726503. The reversal of 12726489 is 98462721.

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

It is a cyclic number.

It is not a de Polignac number, because 12726489 - 2⁵ = 12726457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12726479) 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, 124719 + ... + 124820.

It is an arithmetic number, because the mean of its divisors is an integer number (2245860).

Almost surely, 2^12726489 is an apocalyptic number.

It is an amenable number.

12726489 is a deficient number, since it is larger than the sum of its proper divisors (5240391).

12726489 is a wasteful number, since it uses less digits than its factorization.

12726489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249559.

The product of its digits is 48384, while the sum is 39.

The square root of 12726489 is about 3567.4204966614. The cubic root of 12726489 is about 233.4727518272.

The spelling of 12726489 in words is "twelve million, seven hundred twenty-six thousand, four hundred eighty-nine".