12489909 has 8 divisors (see below), whose sum is σ = 17040672. Its totient is φ = 8132880.

The previous prime is 12489907. The next prime is 12489913. The reversal of 12489909 is 90998421.

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

It is not a de Polignac number, because 12489909 - 2¹ = 12489907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489907) 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, 48282 + ... + 48539.

It is an arithmetic number, because the mean of its divisors is an integer number (2130084).

Almost surely, 2^12489909 is an apocalyptic number.

It is an amenable number.

12489909 is a deficient number, since it is larger than the sum of its proper divisors (4550763).

12489909 is an equidigital number, since it uses as much as digits as its factorization.

12489909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96867.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 12489909 is about 3534.1065348968. The cubic root of 12489909 is about 232.0169738374.

The spelling of 12489909 in words is "twelve million, four hundred eighty-nine thousand, nine hundred nine".