13988544489 has 12 divisors (see below), whose sum is σ = 20243031172. Its totient is φ = 9308455200.

The previous prime is 13988544467. The next prime is 13988544491. The reversal of 13988544489 is 98444588931.

13988544489 is a `hidden beast` number, since 1 + 3 + 9 + 8 + 8 + 544 + 4 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8702091225 + 5286453264 = 93285^2 + 72708^2 .

It is not a de Polignac number, because 13988544489 - 2⁸ = 13988544233 is a prime.

It is a super-2 number, since 2×13988544489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13988544389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1431622 + ... + 1441359.

Almost surely, 2^13988544489 is an apocalyptic number.

It is an amenable number.

13988544489 is a deficient number, since it is larger than the sum of its proper divisors (6254486683).

13988544489 is a wasteful number, since it uses less digits than its factorization.

13988544489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873528 (or 2873525 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 63.

The spelling of 13988544489 in words is "thirteen billion, nine hundred eighty-eight million, five hundred forty-four thousand, four hundred eighty-nine".