9899932643 has 8 divisors (see below), whose sum is σ = 10557696240. Its totient is φ = 9250548480.

The previous prime is 9899932631. The next prime is 9899932667. The reversal of 9899932643 is 3462399989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9899932643 - 2⁶ = 9899932579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9899932673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2092418 + ... + 2097143.

It is an arithmetic number, because the mean of its divisors is an integer number (1319712030).

Almost surely, 2^9899932643 is an apocalyptic number.

9899932643 is a deficient number, since it is larger than the sum of its proper divisors (657763597).

9899932643 is a wasteful number, since it uses less digits than its factorization.

9899932643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189717.

The product of its digits is 22674816, while the sum is 62.

The square root of 9899932643 is about 99498.4052284256. The cubic root of 9899932643 is about 2147.2242992801.

The spelling of 9899932643 in words is "nine billion, eight hundred ninety-nine million, nine hundred thirty-two thousand, six hundred forty-three".