5443981389 has 144 divisors (see below), whose sum is σ = 10602109440. Its totient is φ = 2656019520.

The previous prime is 5443981379. The next prime is 5443981423. The reversal of 5443981389 is 9831893445.

5443981389 is a `hidden beast` number, since 54 + 439 + 81 + 3 + 89 = 666.

It is not a de Polignac number, because 5443981389 - 2⁴ = 5443981373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5443981379) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6582394 + ... + 6583220.

It is an arithmetic number, because the mean of its divisors is an integer number (73625760).

Almost surely, 2^5443981389 is an apocalyptic number.

5443981389 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

5443981389 is a deficient number, since it is larger than the sum of its proper divisors (5158128051).

5443981389 is a wasteful number, since it uses less digits than its factorization.

5443981389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940 (or 930 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 5443981389 is about 73783.3408636394. The cubic root of 5443981389 is about 1759.1608203444.

The spelling of 5443981389 in words is "five billion, four hundred forty-three million, nine hundred eighty-one thousand, three hundred eighty-nine".