12408449 has 4 divisors (see below), whose sum is σ = 12415536. Its totient is φ = 12401364.

The previous prime is 12408443. The next prime is 12408479. The reversal of 12408449 is 94480421.

12408449 is digitally balanced in base 2 and base 3, because in such bases 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12408449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12408443) 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, 1202 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (3103884).

Almost surely, 2^12408449 is an apocalyptic number.

It is an amenable number.

12408449 is a deficient number, since it is larger than the sum of its proper divisors (7087).

12408449 is an equidigital number, since it uses as much as digits as its factorization.

12408449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 12408449 is about 3522.5628454294. The cubic root of 12408449 is about 231.5114633101.

The spelling of 12408449 in words is "twelve million, four hundred eight thousand, four hundred forty-nine".