12609159 has 4 divisors (see below), whose sum is σ = 16812216. Its totient is φ = 8406104.

The previous prime is 12609139. The next prime is 12609161. The reversal of 12609159 is 95190621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95190621 = 3 ⋅31730207.

It is a cyclic number.

It is not a de Polignac number, because 12609159 - 2⁷ = 12609031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12609139) 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, 2101524 + ... + 2101529.

It is an arithmetic number, because the mean of its divisors is an integer number (4203054).

Almost surely, 2^12609159 is an apocalyptic number.

12609159 is a deficient number, since it is larger than the sum of its proper divisors (4203057).

12609159 is an equidigital number, since it uses as much as digits as its factorization.

12609159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203056.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 12609159 is about 3550.9377634647. The cubic root of 12609159 is about 232.7530462632.

The spelling of 12609159 in words is "twelve million, six hundred nine thousand, one hundred fifty-nine".