9804986644 has 12 divisors (see below), whose sum is σ = 17482476564. Its totient is φ = 4809993344.

The previous prime is 9804986603. The next prime is 9804986647. The reversal of 9804986644 is 4466894089.

It can be written as a sum of positive squares in 2 ways, for example, as 7053984144 + 2751002500 = 83988^2 + 52450^2 .

It is a super-2 number, since 2×9804986644² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9804986647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23124757 + ... + 23125180.

It is an arithmetic number, because the mean of its divisors is an integer number (1456873047).

Almost surely, 2^9804986644 is an apocalyptic number.

It is an amenable number.

9804986644 is a deficient number, since it is larger than the sum of its proper divisors (7677489920).

9804986644 is a wasteful number, since it uses less digits than its factorization.

9804986644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46249994 (or 46249992 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 58.

The square root of 9804986644 is about 99020.1325185944. The cubic root of 9804986644 is about 2140.3378687429.

The spelling of 9804986644 in words is "nine billion, eight hundred four million, nine hundred eighty-six thousand, six hundred forty-four".