9984678736 has 10 divisors (see below), whose sum is σ = 19345315082. Its totient is φ = 4992339360.

The previous prime is 9984678701. The next prime is 9984678749. The reversal of 9984678736 is 6378764899.

It can be written as a sum of positive squares in only one way, i.e., 9860490000 + 124188736 = 99300^2 + 11144^2 .

It is a super-2 number, since 2×9984678736² (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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312021195 + ... + 312021226.

Almost surely, 2^9984678736 is an apocalyptic number.

It is an amenable number.

9984678736 is a deficient number, since it is larger than the sum of its proper divisors (9360636346).

9984678736 is a wasteful number, since it uses less digits than its factorization.

9984678736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624042429 (or 624042423 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 67.

The square root of 9984678736 is about 99923.3643148588. The cubic root of 9984678736 is about 2153.3338388707. Note that the first 3 decimals are identical.

The spelling of 9984678736 in words is "nine billion, nine hundred eighty-four million, six hundred seventy-eight thousand, seven hundred thirty-six".