12235609 has 4 divisors (see below), whose sum is σ = 12767616. Its totient is φ = 11703604.

The previous prime is 12235547. The next prime is 12235627. The reversal of 12235609 is 90653221.

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: 90653221 = 3299 ⋅27479.

It is a cyclic number.

It is not a de Polignac number, because 12235609 - 2¹⁹ = 11711321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12235649) 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, 265969 + ... + 266014.

It is an arithmetic number, because the mean of its divisors is an integer number (3191904).

Almost surely, 2^12235609 is an apocalyptic number.

It is an amenable number.

12235609 is a deficient number, since it is larger than the sum of its proper divisors (532007).

12235609 is an equidigital number, since it uses as much as digits as its factorization.

12235609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532006.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 12235609 is about 3497.9435387096. The cubic root of 12235609 is about 230.4315087699.

The spelling of 12235609 in words is "twelve million, two hundred thirty-five thousand, six hundred nine".