8289989568 has 168 divisors, whose sum is σ = 27205362912. Its totient is φ = 2364291072.

The previous prime is 8289989563. The next prime is 8289989593. The reversal of 8289989568 is 8659899828.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 8289989496 and 8289989505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8289989563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2728146 + ... + 2731182.

It is an arithmetic number, because the mean of its divisors is an integer number (161936684).

Almost surely, 2^8289989568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8289989568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13602681456).

8289989568 is an abundant number, since it is smaller than the sum of its proper divisors (18915373344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8289989568 is a wasteful number, since it uses less digits than its factorization.

8289989568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3739 (or 3726 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 72.

The square root of 8289989568 is about 91049.3798331433. The cubic root of 8289989568 is about 2023.8795462277.

The spelling of 8289989568 in words is "eight billion, two hundred eighty-nine million, nine hundred eighty-nine thousand, five hundred sixty-eight".