9870440720 has 320 divisors, whose sum is σ = 29485969920. Its totient is φ = 2991292416.

The previous prime is 9870440717. The next prime is 9870440747. The reversal of 9870440720 is 270440789.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35633222 + ... + 35633498.

It is an arithmetic number, because the mean of its divisors is an integer number (92143656).

Almost surely, 2^9870440720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9870440720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14742984960).

9870440720 is an abundant number, since it is smaller than the sum of its proper divisors (19615529200).

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

9870440720 is a wasteful number, since it uses less digits than its factorization.

9870440720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 9870440720 is about 99350.0916959818. The cubic root of 9870440720 is about 2145.0899830578.

The spelling of 9870440720 in words is "nine billion, eight hundred seventy million, four hundred forty thousand, seven hundred twenty".