13444703689 has 4 divisors (see below), whose sum is σ = 13878403840. Its totient is φ = 13011003540.

The previous prime is 13444703687. The next prime is 13444703707. The reversal of 13444703689 is 98630744431.

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 13444703689 - 2¹ = 13444703687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13444703681) 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, 216850029 + ... + 216850090.

It is an arithmetic number, because the mean of its divisors is an integer number (3469600960).

Almost surely, 2^13444703689 is an apocalyptic number.

It is an amenable number.

13444703689 is a deficient number, since it is larger than the sum of its proper divisors (433700151).

13444703689 is an equidigital number, since it uses as much as digits as its factorization.

13444703689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433700150.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 13444703689 in words is "thirteen billion, four hundred forty-four million, seven hundred three thousand, six hundred eighty-nine".