8449930720 has 192 divisors, whose sum is σ = 25420179456. Its totient is φ = 2577530880.

The previous prime is 8449930691. The next prime is 8449930721. The reversal of 8449930720 is 270399448.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8449930721) 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, 571744 + ... + 586336.

It is an arithmetic number, because the mean of its divisors is an integer number (132396768).

Almost surely, 2^8449930720 is an apocalyptic number.

8449930720 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 8449930720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12710089728).

8449930720 is an abundant number, since it is smaller than the sum of its proper divisors (16970248736).

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

8449930720 is a wasteful number, since it uses less digits than its factorization.

8449930720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14673 (or 14665 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 8449930720 is about 91923.5047199572. The cubic root of 8449930720 is about 2036.8124897338.

The spelling of 8449930720 in words is "eight billion, four hundred forty-nine million, nine hundred thirty thousand, seven hundred twenty".