12449894476 has 18 divisors (see below), whose sum is σ = 22935808140. Its totient is φ = 5896857672.

The previous prime is 12449894399. The next prime is 12449894489. The reversal of 12449894476 is 67449894421.

It is a self number, because there is not a number n which added to its sum of digits gives 12449894476.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 966325 + ... + 979123.

Almost surely, 2^12449894476 is an apocalyptic number.

It is an amenable number.

12449894476 is a deficient number, since it is larger than the sum of its proper divisors (10485913664).

12449894476 is an frugal number, since it uses more digits than its factorization.

12449894476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25621 (or 12820 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 58.

Subtracting 12449894476 from its reverse (67449894421), we obtain a palindrome (54999999945).

The spelling of 12449894476 in words is "twelve billion, four hundred forty-nine million, eight hundred ninety-four thousand, four hundred seventy-six".