9984985936 has 10 divisors (see below), whose sum is σ = 19345910282. Its totient is φ = 4992492960.

The previous prime is 9984985931. The next prime is 9984985943. The reversal of 9984985936 is 6395894899.

It can be written as a sum of positive squares in only one way, i.e., 8604417600 + 1380568336 = 92760^2 + 37156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9984985931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312030795 + ... + 312030826.

Almost surely, 2^9984985936 is an apocalyptic number.

It is an amenable number.

9984985936 is a deficient number, since it is larger than the sum of its proper divisors (9360924346).

9984985936 is a wasteful number, since it uses less digits than its factorization.

9984985936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624061629 (or 624061623 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 70.

The square root of 9984985936 is about 99924.9014810623. The cubic root of 9984985936 is about 2153.3559226182.

The spelling of 9984985936 in words is "nine billion, nine hundred eighty-four million, nine hundred eighty-five thousand, nine hundred thirty-six".