12993649 has 2 divisors, whose sum is σ = 12993650. Its totient is φ = 12993648.

The previous prime is 12993641. The next prime is 12993677. The reversal of 12993649 is 94639921.

12993649 is digitally balanced in base 3, 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., 11122225 + 1871424 = 3335^2 + 1368^2 .

It is an emirp because it is prime and its reverse (94639921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12993649 - 2³ = 12993641 is a prime.

It is not a weakly prime, because it can be changed into another prime (12993641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6496824 + 6496825.

It is an arithmetic number, because the mean of its divisors is an integer number (6496825).

Almost surely, 2^12993649 is an apocalyptic number.

It is an amenable number.

12993649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12993649 is an equidigital number, since it uses as much as digits as its factorization.

12993649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 43.

The square root of 12993649 is about 3604.6704426341. The cubic root of 12993649 is about 235.0951719539.

The spelling of 12993649 in words is "twelve million, nine hundred ninety-three thousand, six hundred forty-nine".