8909798880 has 144 divisors (see below), whose sum is σ = 29340012240. Its totient is φ = 2272579584.

The previous prime is 8909798867. The next prime is 8909798969. The reversal of 8909798880 is 888979098.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236376 + ... + 271464.

It is an arithmetic number, because the mean of its divisors is an integer number (203750085).

Almost surely, 2^8909798880 is an apocalyptic number.

8909798880 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 8909798880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14670006120).

8909798880 is an abundant number, since it is smaller than the sum of its proper divisors (20430213360).

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

8909798880 is a wasteful number, since it uses less digits than its factorization.

8909798880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35153 (or 35122 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 66.

The square root of 8909798880 is about 94391.7309937687. The cubic root of 8909798880 is about 2073.1113704088. Note that the first 3 decimals are identical.

The spelling of 8909798880 in words is "eight billion, nine hundred nine million, seven hundred ninety-eight thousand, eight hundred eighty".