12043863 has 16 divisors (see below), whose sum is σ = 19215840. Its totient is φ = 7411392.

The previous prime is 12043831. The next prime is 12043909. The reversal of 12043863 is 36834021.

It is a happy number.

It is not a de Polignac number, because 12043863 - 2⁵ = 12043831 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12043063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16806 + ... + 17507.

It is an arithmetic number, because the mean of its divisors is an integer number (1200990).

Almost surely, 2^12043863 is an apocalyptic number.

12043863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12043863 is a deficient number, since it is larger than the sum of its proper divisors (7171977).

12043863 is a wasteful number, since it uses less digits than its factorization.

12043863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34335 (or 34329 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12043863 is about 3470.4269189827. The cubic root of 12043863 is about 229.2214571069.

Adding to 12043863 its reverse (36834021), we get a palindrome (48877884).

The spelling of 12043863 in words is "twelve million, forty-three thousand, eight hundred sixty-three".