12984009 has 16 divisors (see below), whose sum is σ = 18009600. Its totient is φ = 8311680.

The previous prime is 12984007. The next prime is 12984017. The reversal of 12984009 is 90048921.

12984009 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 12984009 - 2¹ = 12984007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12984007) 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, 13389 + ... + 14325.

It is an arithmetic number, because the mean of its divisors is an integer number (1125600).

Almost surely, 2^12984009 is an apocalyptic number.

It is an amenable number.

12984009 is a deficient number, since it is larger than the sum of its proper divisors (5025591).

12984009 is a wasteful number, since it uses less digits than its factorization.

12984009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12984009 is about 3603.3330403947. Note that the first 3 decimals coincide. The cubic root of 12984009 is about 235.0370184629.

The spelling of 12984009 in words is "twelve million, nine hundred eighty-four thousand, nine".