13719881 has 16 divisors (see below), whose sum is σ = 16896000. Its totient is φ = 10877328.

The previous prime is 13719877. The next prime is 13719883. The reversal of 13719881 is 18891731.

13719881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13719881 - 2² = 13719877 is a prime.

It is a super-2 number, since 2×13719881² = 376470269308322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13719883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4520 + ... + 6918.

It is an arithmetic number, because the mean of its divisors is an integer number (1056000).

Almost surely, 2^13719881 is an apocalyptic number.

It is an amenable number.

13719881 is a deficient number, since it is larger than the sum of its proper divisors (3176119).

13719881 is a wasteful number, since it uses less digits than its factorization.

13719881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468.

The product of its digits is 12096, while the sum is 38.

The square root of 13719881 is about 3704.0357719655. The cubic root of 13719881 is about 239.3959403996.

The spelling of 13719881 in words is "thirteen million, seven hundred nineteen thousand, eight hundred eighty-one".