12643049 has 2 divisors, whose sum is σ = 12643050. Its totient is φ = 12643048.

The previous prime is 12643021. The next prime is 12643109. The reversal of 12643049 is 94034621.

12643049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9517225 + 3125824 = 3085^2 + 1768^2 .

It is an emirp because it is prime and its reverse (94034621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12643049 - 2⁸ = 12642793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12643249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321524 + 6321525.

It is an arithmetic number, because the mean of its divisors is an integer number (6321525).

Almost surely, 2^12643049 is an apocalyptic number.

It is an amenable number.

12643049 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643049 is an equidigital number, since it uses as much as digits as its factorization.

12643049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 12643049 is about 3555.7065401970. The cubic root of 12643049 is about 232.9613854113.

The spelling of 12643049 in words is "twelve million, six hundred forty-three thousand, forty-nine".