8709004440 has 128 divisors (see below), whose sum is σ = 29055168000. Its totient is φ = 2320389504.

The previous prime is 8709004439. The next prime is 8709004453. The reversal of 8709004440 is 444009078.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8709004395 and 8709004404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1572957 + ... + 1578483.

It is an arithmetic number, because the mean of its divisors is an integer number (226993500).

Almost surely, 2^8709004440 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 8709004440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14527584000).

8709004440 is an abundant number, since it is smaller than the sum of its proper divisors (20346163560).

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

8709004440 is a wasteful number, since it uses less digits than its factorization.

8709004440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7006 (or 6996 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 8709004440 is about 93322.0469128276. The cubic root of 8709004440 is about 2057.4194318120.

The spelling of 8709004440 in words is "eight billion, seven hundred nine million, four thousand, four hundred forty".