8709972372 has 72 divisors (see below), whose sum is σ = 23332084776. Its totient is φ = 2730184704.

The previous prime is 8709972307. The next prime is 8709972421. The reversal of 8709972372 is 2732799078.

It can be written as a sum of positive squares in 4 ways, for example, as 5655641616 + 3054330756 = 75204^2 + 55266^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 788278 + ... + 799250.

It is an arithmetic number, because the mean of its divisors is an integer number (324056733).

Almost surely, 2^8709972372 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 8709972372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11666042388).

8709972372 is an abundant number, since it is smaller than the sum of its proper divisors (14622112404).

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

8709972372 is a wasteful number, since it uses less digits than its factorization.

8709972372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12297 (or 12292 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The square root of 8709972372 is about 93327.2327458604. The cubic root of 8709972372 is about 2057.4956505634.

The spelling of 8709972372 in words is "eight billion, seven hundred nine million, nine hundred seventy-two thousand, three hundred seventy-two".