12387849 has 16 divisors (see below), whose sum is σ = 17822592. Its totient is φ = 7624448.

The previous prime is 12387847. The next prime is 12387853. The reversal of 12387849 is 94878321.

It is a cyclic number.

It is not a de Polignac number, because 12387849 - 2¹ = 12387847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12387849.

It is not an unprimeable number, because it can be changed into a prime (12387841) 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, 412 + ... + 4994.

It is an arithmetic number, because the mean of its divisors is an integer number (1113912).

Almost surely, 2^12387849 is an apocalyptic number.

It is an amenable number.

12387849 is a deficient number, since it is larger than the sum of its proper divisors (5434743).

12387849 is a wasteful number, since it uses less digits than its factorization.

12387849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656.

The product of its digits is 96768, while the sum is 42.

The square root of 12387849 is about 3519.6376233925. The cubic root of 12387849 is about 231.3832770569.

The spelling of 12387849 in words is "twelve million, three hundred eighty-seven thousand, eight hundred forty-nine".