12447418 has 8 divisors (see below), whose sum is σ = 18712512. Its totient is φ = 6209916.

The previous prime is 12447401. The next prime is 12447469. The reversal of 12447418 is 81474421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12447418.

It is an unprimeable number.

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, 5730 + ... + 7597.

It is an arithmetic number, because the mean of its divisors is an integer number (2339064).

Almost surely, 2^12447418 is an apocalyptic number.

12447418 is a deficient number, since it is larger than the sum of its proper divisors (6265094).

12447418 is a wasteful number, since it uses less digits than its factorization.

12447418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13796.

The product of its digits is 7168, while the sum is 31.

The square root of 12447418 is about 3528.0898514635. The cubic root of 12447418 is about 231.7535656148.

The spelling of 12447418 in words is "twelve million, four hundred forty-seven thousand, four hundred eighteen".