12424609 has 4 divisors (see below), whose sum is σ = 12432816. Its totient is φ = 12416404.

The previous prime is 12424589. The next prime is 12424619. The reversal of 12424609 is 90642421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90642421 = 73 ⋅1241677.

It is a cyclic number.

It is not a de Polignac number, because 12424609 - 2⁷ = 12424481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12424619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1099 + ... + 5104.

It is an arithmetic number, because the mean of its divisors is an integer number (3108204).

Almost surely, 2^12424609 is an apocalyptic number.

It is an amenable number.

12424609 is a deficient number, since it is larger than the sum of its proper divisors (8207).

12424609 is an equidigital number, since it uses as much as digits as its factorization.

12424609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12424609 is about 3524.8558835788. The cubic root of 12424609 is about 231.6119218043.

The spelling of 12424609 in words is "twelve million, four hundred twenty-four thousand, six hundred nine".