13899519889 has 8 divisors (see below), whose sum is σ = 14725029960. Its totient is φ = 13074886656.

The previous prime is 13899519877. The next prime is 13899519911. The reversal of 13899519889 is 98891599831.

It can be written as a sum of positive squares in 4 ways, for example, as 1081883664 + 12817636225 = 32892^2 + 113215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13899519889 - 2⁵ = 13899519857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13899513889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186424 + ... + 250105.

It is an arithmetic number, because the mean of its divisors is an integer number (1840628745).

Almost surely, 2^13899519889 is an apocalyptic number.

It is an amenable number.

13899519889 is a deficient number, since it is larger than the sum of its proper divisors (825510071).

13899519889 is a wasteful number, since it uses less digits than its factorization.

13899519889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438419.

The product of its digits is 50388480, while the sum is 70.

The spelling of 13899519889 in words is "thirteen billion, eight hundred ninety-nine million, five hundred nineteen thousand, eight hundred eighty-nine".