12444964249 has 9 divisors (see below), whose sum is σ = 12520948701. Its totient is φ = 12369440160.

The previous prime is 12444964243. The next prime is 12444964253. The reversal of 12444964249 is 94246944421.

The square root of 12444964249 is 111557.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1489574025 + 10955390224 = 38595^2 + 104668^2 .

It is not a de Polignac number, because 12444964249 - 2⁹ = 12444963737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12444964243) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31347319 + ... + 31347715.

Almost surely, 2^12444964249 is an apocalyptic number.

12444964249 is the 111557-th square number.

12444964249 is the 55779-th centered octagonal number.

It is an amenable number.

12444964249 is a deficient number, since it is larger than the sum of its proper divisors (75984452).

12444964249 is an frugal number, since it uses more digits than its factorization.

12444964249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 678 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

Multiplying 12444964249 by its sum of digits (49), we get a square (609803248201 = 780899²).

The spelling of 12444964249 in words is "twelve billion, four hundred forty-four million, nine hundred sixty-four thousand, two hundred forty-nine".