9639238056 has 96 divisors (see below), whose sum is σ = 28492238880. Its totient is φ = 2708899200.

The previous prime is 9639238043. The next prime is 9639238067. The reversal of 9639238056 is 6508329369.

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, 4551 + ... + 138921.

It is an arithmetic number, because the mean of its divisors is an integer number (296794155).

Almost surely, 2^9639238056 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 9639238056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14246119440).

9639238056 is an abundant number, since it is smaller than the sum of its proper divisors (18853000824).

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

9639238056 is a wasteful number, since it uses less digits than its factorization.

9639238056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134455 (or 134444 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The square root of 9639238056 is about 98179.6213885550. The cubic root of 9639238056 is about 2128.2088033800.

The spelling of 9639238056 in words is "nine billion, six hundred thirty-nine million, two hundred thirty-eight thousand, fifty-six".