12418559 has 4 divisors (see below), whose sum is σ = 12426216. Its totient is φ = 12410904.

The previous prime is 12418547. The next prime is 12418561. The reversal of 12418559 is 95581421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 95581421 = 13 ⋅7352417.

It is a cyclic number.

It is not a de Polignac number, because 12418559 - 2⁸ = 12418303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12418519) 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, 329 + ... + 4994.

It is an arithmetic number, because the mean of its divisors is an integer number (3106554).

Almost surely, 2^12418559 is an apocalyptic number.

12418559 is a deficient number, since it is larger than the sum of its proper divisors (7657).

12418559 is an equidigital number, since it uses as much as digits as its factorization.

12418559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656.

The product of its digits is 14400, while the sum is 35.

The square root of 12418559 is about 3523.9975879674. The cubic root of 12418559 is about 231.5743222407.

The spelling of 12418559 in words is "twelve million, four hundred eighteen thousand, five hundred fifty-nine".