8944961280 has 144 divisors (see below), whose sum is σ = 29810350080. Its totient is φ = 2281590784.

The previous prime is 8944961183. The next prime is 8944961293. The reversal of 8944961280 is 821694498.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37681 + ... + 138959.

It is an arithmetic number, because the mean of its divisors is an integer number (207016320).

Almost surely, 2^8944961280 is an apocalyptic number.

8944961280 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 8944961280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14905175040).

8944961280 is an abundant number, since it is smaller than the sum of its proper divisors (20865388800).

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

8944961280 is a wasteful number, since it uses less digits than its factorization.

8944961280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101326 (or 101312 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 8944961280 is about 94577.8054302382. The cubic root of 8944961280 is about 2075.8349592773.

The spelling of 8944961280 in words is "eight billion, nine hundred forty-four million, nine hundred sixty-one thousand, two hundred eighty".