12449621 has 4 divisors (see below), whose sum is σ = 12483372. Its totient is φ = 12415872.

The previous prime is 12449611. The next prime is 12449623. The reversal of 12449621 is 12694421.

12449621 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7980625 + 4468996 = 2825^2 + 2114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12449621 - 2¹⁴ = 12433237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12449623) 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 in 3 ways as a sum of consecutive naturals, for example, 16316 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (3120843).

Almost surely, 2^12449621 is an apocalyptic number.

It is an amenable number.

12449621 is a deficient number, since it is larger than the sum of its proper divisors (33751).

12449621 is an equidigital number, since it uses as much as digits as its factorization.

12449621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33750.

The product of its digits is 3456, while the sum is 29.

The square root of 12449621 is about 3528.4020462527. The cubic root of 12449621 is about 231.7672370709.

The spelling of 12449621 in words is "twelve million, four hundred forty-nine thousand, six hundred twenty-one".