12507009 has 16 divisors (see below), whose sum is σ = 17829504. Its totient is φ = 7779200.

The previous prime is 12506983. The next prime is 12507031. The reversal of 12507009 is 90070521.

It is a cyclic number.

It is not a de Polignac number, because 12507009 - 2⁷ = 12506881 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12507009.

It is not an unprimeable number, because it can be changed into a prime (12507059) 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, 619 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (1114344).

Almost surely, 2^12507009 is an apocalyptic number.

It is an amenable number.

12507009 is a deficient number, since it is larger than the sum of its proper divisors (5322495).

12507009 is a wasteful number, since it uses less digits than its factorization.

12507009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 12507009 is about 3536.5249893080. The cubic root of 12507009 is about 232.1228107705.

The spelling of 12507009 in words is "twelve million, five hundred seven thousand, nine".