12429009 has 12 divisors (see below), whose sum is σ = 18335616. Its totient is φ = 8109432.

The previous prime is 12428987. The next prime is 12429019. The reversal of 12429009 is 90092421.

It is not a de Polignac number, because 12429009 - 2⁸ = 12428753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12429019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14269 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (1527968).

Almost surely, 2^12429009 is an apocalyptic number.

It is an amenable number.

12429009 is a deficient number, since it is larger than the sum of its proper divisors (5906607).

12429009 is a wasteful number, since it uses less digits than its factorization.

12429009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29436 (or 29433 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12429009 is about 3525.4799673236. The cubic root of 12429009 is about 231.6392592757.

The spelling of 12429009 in words is "twelve million, four hundred twenty-nine thousand, nine".