12143799 has 12 divisors (see below), whose sum is σ = 17703400. Its totient is φ = 8020944.

The previous prime is 12143777. The next prime is 12143809. The reversal of 12143799 is 99734121.

It is not a de Polignac number, because 12143799 - 2⁵ = 12143767 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 (12143099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5209 + ... + 7170.

Almost surely, 2^12143799 is an apocalyptic number.

12143799 is a deficient number, since it is larger than the sum of its proper divisors (5559601).

12143799 is a wasteful number, since it uses less digits than its factorization.

12143799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12494 (or 12491 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 12143799 is about 3484.7954028895. The cubic root of 12143799 is about 229.8537128997.

The spelling of 12143799 in words is "twelve million, one hundred forty-three thousand, seven hundred ninety-nine".