13000444449 has 4 divisors (see below), whose sum is σ = 17333925936. Its totient is φ = 8666962964.

The previous prime is 13000444439. The next prime is 13000444507. The reversal of 13000444449 is 94444400031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13000444449 - 2⁴ = 13000444433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13000444409) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2166740739 + ... + 2166740744.

It is an arithmetic number, because the mean of its divisors is an integer number (4333481484).

Almost surely, 2^13000444449 is an apocalyptic number.

It is an amenable number.

13000444449 is a deficient number, since it is larger than the sum of its proper divisors (4333481487).

13000444449 is an equidigital number, since it uses as much as digits as its factorization.

13000444449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333481486.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 13000444449 in words is "thirteen billion, four hundred forty-four thousand, four hundred forty-nine".