12237609 has 4 divisors (see below), whose sum is σ = 16316816. Its totient is φ = 8158404.

The previous prime is 12237607. The next prime is 12237613. The reversal of 12237609 is 90673221.

12237609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 90673221 = 3 ⋅30224407.

It is not a de Polignac number, because 12237609 - 2¹ = 12237607 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12237601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2039599 + ... + 2039604.

It is an arithmetic number, because the mean of its divisors is an integer number (4079204).

Almost surely, 2^12237609 is an apocalyptic number.

It is an amenable number.

12237609 is a deficient number, since it is larger than the sum of its proper divisors (4079207).

12237609 is an equidigital number, since it uses as much as digits as its factorization.

12237609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4079206.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 12237609 is about 3498.2294092869. The cubic root of 12237609 is about 230.4440633257. Note that the first 3 decimals are identical.

The spelling of 12237609 in words is "twelve million, two hundred thirty-seven thousand, six hundred nine".