12489783446 has 8 divisors (see below), whose sum is σ = 21411057360. Its totient is φ = 5352764328.

The previous prime is 12489783443. The next prime is 12489783461. The reversal of 12489783446 is 64438798421.

It is a happy number.

12489783446 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 12489783391 and 12489783400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489783443) 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, 446063681 + ... + 446063708.

It is an arithmetic number, because the mean of its divisors is an integer number (2676382170).

Almost surely, 2^12489783446 is an apocalyptic number.

12489783446 is a deficient number, since it is larger than the sum of its proper divisors (8921273914).

12489783446 is an equidigital number, since it uses as much as digits as its factorization.

12489783446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892127398.

The product of its digits is 9289728, while the sum is 56.

The spelling of 12489783446 in words is "twelve billion, four hundred eighty-nine million, seven hundred eighty-three thousand, four hundred forty-six".