12303890449 has 4 divisors (see below), whose sum is σ = 12603985380. Its totient is φ = 12003795520.

The previous prime is 12303890413. The next prime is 12303890507. The reversal of 12303890449 is 94409830321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6594576849 + 5709313600 = 81207^2 + 75560^2 .

It is a cyclic number.

It is not a de Polignac number, because 12303890449 - 2¹³ = 12303882257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12303899449) 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, 150047404 + ... + 150047485.

It is an arithmetic number, because the mean of its divisors is an integer number (3150996345).

Almost surely, 2^12303890449 is an apocalyptic number.

It is an amenable number.

12303890449 is a deficient number, since it is larger than the sum of its proper divisors (300094931).

12303890449 is an equidigital number, since it uses as much as digits as its factorization.

12303890449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300094930.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 12303890449 in words is "twelve billion, three hundred three million, eight hundred ninety thousand, four hundred forty-nine".