12427799 has 4 divisors (see below), whose sum is σ = 13158864. Its totient is φ = 11696736.

The previous prime is 12427781. The next prime is 12427813. The reversal of 12427799 is 99772421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12427799 - 2¹⁶ = 12362263 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 (12427759) 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 3 ways as a sum of consecutive naturals, for example, 365507 + ... + 365540.

It is an arithmetic number, because the mean of its divisors is an integer number (3289716).

Almost surely, 2^12427799 is an apocalyptic number.

12427799 is a deficient number, since it is larger than the sum of its proper divisors (731065).

12427799 is an equidigital number, since it uses as much as digits as its factorization.

12427799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731064.

The product of its digits is 63504, while the sum is 41.

The square root of 12427799 is about 3525.3083553074. The cubic root of 12427799 is about 231.6317421143.

The spelling of 12427799 in words is "twelve million, four hundred twenty-seven thousand, seven hundred ninety-nine".