9647990784 has 192 divisors, whose sum is σ = 28796040000. Its totient is φ = 3191685120.

The previous prime is 9647990783. The next prime is 9647990819. The reversal of 9647990784 is 4870997469.

9647990784 is a `hidden beast` number, since 9 + 6 + 479 + 90 + 78 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (9647990783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8238519 + ... + 8239689.

It is an arithmetic number, because the mean of its divisors is an integer number (149979375).

Almost surely, 2^9647990784 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 9647990784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14398020000).

9647990784 is an abundant number, since it is smaller than the sum of its proper divisors (19148049216).

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

9647990784 is a wasteful number, since it uses less digits than its factorization.

9647990784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The square root of 9647990784 is about 98224.1863493916. The cubic root of 9647990784 is about 2128.8527684376.

The spelling of 9647990784 in words is "nine billion, six hundred forty-seven million, nine hundred ninety thousand, seven hundred eighty-four".