9772020984 has 128 divisors (see below), whose sum is σ = 27037152000. Its totient is φ = 2942952320.

The previous prime is 9772020977. The next prime is 9772020991. The reversal of 9772020984 is 4890202779.

9772020984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9772020977) and next prime (9772020991).

It is a super-2 number, since 2×9772020984² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5717122 + ... + 5718830.

It is an arithmetic number, because the mean of its divisors is an integer number (211227750).

Almost surely, 2^9772020984 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 9772020984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13518576000).

9772020984 is an abundant number, since it is smaller than the sum of its proper divisors (17265131016).

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

9772020984 is a wasteful number, since it uses less digits than its factorization.

9772020984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 9772020984 is about 98853.5329869398. The cubic root of 9772020984 is about 2137.9364759355.

The spelling of 9772020984 in words is "nine billion, seven hundred seventy-two million, twenty thousand, nine hundred eighty-four".