12644849 has 4 divisors (see below), whose sum is σ = 14451264. Its totient is φ = 10838436.

The previous prime is 12644831. The next prime is 12644857. The reversal of 12644849 is 94844621.

12644849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12644849 - 2¹⁶ = 12579313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12644809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903197 + ... + 903210.

It is an arithmetic number, because the mean of its divisors is an integer number (3612816).

Almost surely, 2^12644849 is an apocalyptic number.

It is an amenable number.

12644849 is a deficient number, since it is larger than the sum of its proper divisors (1806415).

12644849 is an equidigital number, since it uses as much as digits as its factorization.

12644849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806414.

The product of its digits is 55296, while the sum is 38.

The square root of 12644849 is about 3555.9596454403. The cubic root of 12644849 is about 232.9724405135.

The spelling of 12644849 in words is "twelve million, six hundred forty-four thousand, eight hundred forty-nine".