8891971360 has 96 divisors (see below), whose sum is σ = 21552894720. Its totient is φ = 3465111552.

The previous prime is 8891971349. The next prime is 8891971453. The reversal of 8891971360 is 631791988.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8891971298 and 8891971307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704436 + ... + 1709644.

It is an arithmetic number, because the mean of its divisors is an integer number (224509320).

Almost surely, 2^8891971360 is an apocalyptic number.

8891971360 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8891971360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10776447360).

8891971360 is an abundant number, since it is smaller than the sum of its proper divisors (12660923360).

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

8891971360 is a wasteful number, since it uses less digits than its factorization.

8891971360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498 (or 5490 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 8891971360 is about 94297.2500129246. The cubic root of 8891971360 is about 2071.7277584902.

The spelling of 8891971360 in words is "eight billion, eight hundred ninety-one million, nine hundred seventy-one thousand, three hundred sixty".