8999061120 has 320 divisors, whose sum is σ = 36729792000. Its totient is φ = 2056845312.

The previous prime is 8999061103. The next prime is 8999061139. The reversal of 8999061120 is 211609998.

8999061120 is a `hidden beast` number, since 8 + 9 + 9 + 9 + 0 + 611 + 20 = 666.

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 (45).

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 39 ways as a sum of consecutive naturals, for example, 350481 + ... + 375279.

It is an arithmetic number, because the mean of its divisors is an integer number (114780600).

Almost surely, 2^8999061120 is an apocalyptic number.

8999061120 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 8999061120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18364896000).

8999061120 is an abundant number, since it is smaller than the sum of its proper divisors (27730730880).

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

8999061120 is a wasteful number, since it uses less digits than its factorization.

8999061120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24837 (or 24816 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 8999061120 is about 94863.3813439095. The cubic root of 8999061120 is about 2080.0114890884.

The spelling of 8999061120 in words is "eight billion, nine hundred ninety-nine million, sixty-one thousand, one hundred twenty".