12144859 has 2 divisors, whose sum is σ = 12144860. Its totient is φ = 12144858.

The previous prime is 12144829. The next prime is 12144863. The reversal of 12144859 is 95844121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (95844121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12144859 - 2⁵ = 12144827 is a prime.

It is not a weakly prime, because it can be changed into another prime (12144829) 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 as a sum of consecutive naturals, namely, 6072429 + 6072430.

It is an arithmetic number, because the mean of its divisors is an integer number (6072430).

Almost surely, 2^12144859 is an apocalyptic number.

12144859 is a deficient number, since it is larger than the sum of its proper divisors (1).

12144859 is an equidigital number, since it uses as much as digits as its factorization.

12144859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 12144859 is about 3484.9474888440. The cubic root of 12144859 is about 229.8604004788.

The spelling of 12144859 in words is "twelve million, one hundred forty-four thousand, eight hundred fifty-nine".