9939997913 has 8 divisors (see below), whose sum is σ = 10096097088. Its totient is φ = 9784764144.

The previous prime is 9939997901. The next prime is 9939997931. The reversal of 9939997913 is 3197999399.

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 9939997913 - 2²⁰ = 9938949337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9939997513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193181 + ... + 239162.

It is an arithmetic number, because the mean of its divisors is an integer number (1262012136).

Almost surely, 2^9939997913 is an apocalyptic number.

It is an amenable number.

9939997913 is a deficient number, since it is larger than the sum of its proper divisors (156099175).

9939997913 is a wasteful number, since it uses less digits than its factorization.

9939997913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432703.

The product of its digits is 33480783, while the sum is 68.

The square root of 9939997913 is about 99699.5381784690. The cubic root of 9939997913 is about 2150.1170235925.

The spelling of 9939997913 in words is "nine billion, nine hundred thirty-nine million, nine hundred ninety-seven thousand, nine hundred thirteen".