12990009 has 8 divisors (see below), whose sum is σ = 18073152. Its totient is φ = 8283440.

The previous prime is 12990007. The next prime is 12990013. The reversal of 12990009 is 90009921.

12990009 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 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 12990009 - 2¹ = 12990007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12990007) 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, 94062 + ... + 94199.

It is an arithmetic number, because the mean of its divisors is an integer number (2259144).

Almost surely, 2^12990009 is an apocalyptic number.

It is an amenable number.

12990009 is a deficient number, since it is larger than the sum of its proper divisors (5083143).

12990009 is a wasteful number, since it uses less digits than its factorization.

12990009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188287.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 12990009 is about 3604.1655067436. The cubic root of 12990009 is about 235.0732169627.

The spelling of 12990009 in words is "twelve million, nine hundred ninety thousand, nine".