12448621 has 2 divisors, whose sum is σ = 12448622. Its totient is φ = 12448620.

The previous prime is 12448619. The next prime is 12448633. The reversal of 12448621 is 12684421.

12448621 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., 11902500 + 546121 = 3450^2 + 739^2 .

It is an emirp because it is prime and its reverse (12684421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12448621 - 2¹ = 12448619 is a prime.

Together with 12448619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12448621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12448651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6224310 + 6224311.

It is an arithmetic number, because the mean of its divisors is an integer number (6224311).

Almost surely, 2^12448621 is an apocalyptic number.

It is an amenable number.

12448621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12448621 is an equidigital number, since it uses as much as digits as its factorization.

12448621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

The square root of 12448621 is about 3528.2603361997. The cubic root of 12448621 is about 231.7610314351.

The spelling of 12448621 in words is "twelve million, four hundred forty-eight thousand, six hundred twenty-one".