12143899 has 8 divisors (see below), whose sum is σ = 12888720. Its totient is φ = 11402496.

The previous prime is 12143891. The next prime is 12143927. The reversal of 12143899 is 99834121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12143899 - 2³ = 12143891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12143891) 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 in 7 ways as a sum of consecutive naturals, for example, 13312 + ... + 14194.

It is an arithmetic number, because the mean of its divisors is an integer number (1611090).

Almost surely, 2^12143899 is an apocalyptic number.

12143899 is a deficient number, since it is larger than the sum of its proper divisors (744821).

12143899 is an equidigital number, since it uses as much as digits as its factorization.

12143899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709.

The product of its digits is 15552, while the sum is 37.

The square root of 12143899 is about 3484.8097509046. The cubic root of 12143899 is about 229.8543438200.

The spelling of 12143899 in words is "twelve million, one hundred forty-three thousand, eight hundred ninety-nine".