12408005 has 4 divisors (see below), whose sum is σ = 14889612. Its totient is φ = 9926400.

The previous prime is 12408001. The next prime is 12408013. The reversal of 12408005 is 50080421.

12408005 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, and also an emirpimes, since its reverse is a distinct semiprime: 50080421 = 97 ⋅516293.

It can be written as a sum of positive squares in 2 ways, for example, as 2365444 + 10042561 = 1538^2 + 3169^2 .

It is not a de Polignac number, because 12408005 - 2² = 12408001 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 (12408001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240796 + ... + 1240805.

It is an arithmetic number, because the mean of its divisors is an integer number (3722403).

Almost surely, 2^12408005 is an apocalyptic number.

It is an amenable number.

12408005 is a deficient number, since it is larger than the sum of its proper divisors (2481607).

12408005 is an equidigital number, since it uses as much as digits as its factorization.

12408005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481606.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 12408005 is about 3522.4998225692. The cubic root of 12408005 is about 231.5087019573.

Adding to 12408005 its reverse (50080421), we get a palindrome (62488426).

The spelling of 12408005 in words is "twelve million, four hundred eight thousand, five".