8989621760 has 320 divisors, whose sum is σ = 27237399552. Its totient is φ = 2772566016.

The previous prime is 8989621741. The next prime is 8989621763. The reversal of 8989621760 is 671269898.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 8989621696 and 8989621705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8989621763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7006079 + ... + 7007361.

Almost surely, 2^8989621760 is an apocalyptic number.

8989621760 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 8989621760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13618699776).

8989621760 is an abundant number, since it is smaller than the sum of its proper divisors (18247777792).

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

8989621760 is a wasteful number, since it uses less digits than its factorization.

8989621760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 8989621760 is about 94813.6158998274. The cubic root of 8989621760 is about 2079.2839744488.

The spelling of 8989621760 in words is "eight billion, nine hundred eighty-nine million, six hundred twenty-one thousand, seven hundred sixty".