9899738636 has 12 divisors (see below), whose sum is σ = 17327042880. Its totient is φ = 4949154960.

The previous prime is 9899738603. The next prime is 9899738647. The reversal of 9899738636 is 6368379989.

It is a super-2 number, since 2×9899738636² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 146780 + ... + 203331.

It is an arithmetic number, because the mean of its divisors is an integer number (1443920240).

Almost surely, 2^9899738636 is an apocalyptic number.

It is an amenable number.

9899738636 is a deficient number, since it is larger than the sum of its proper divisors (7427304244).

9899738636 is a wasteful number, since it uses less digits than its factorization.

9899738636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357184 (or 357182 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 68.

The square root of 9899738636 is about 99497.4302984755. The cubic root of 9899738636 is about 2147.2102729468.

The spelling of 9899738636 in words is "nine billion, eight hundred ninety-nine million, seven hundred thirty-eight thousand, six hundred thirty-six".