9989730379899 has 12 divisors (see below), whose sum is σ = 14475129829056. Its totient is φ = 6638811354672.

The previous prime is 9989730379841. The next prime is 9989730379919.

9989730379899 is a `hidden beast` number, since 9 + 9 + 89 + 73 + 0 + 379 + 8 + 99 = 666.

9989730379899 is nontrivially palindromic in base 10.

9989730379899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9989730379899 - 2¹⁵ = 9989730347131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9989730379799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1750738539 + ... + 1750744244.

It is an arithmetic number, because the mean of its divisors is an integer number (1206260819088).

Almost surely, 2^{9989730379899} is an apocalyptic number.

9989730379899 is a deficient number, since it is larger than the sum of its proper divisors (4485399449157).

9989730379899 is a wasteful number, since it uses less digits than its factorization.

9989730379899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501483106 (or 3501483103 counting only the distinct ones).

The product of its (nonzero) digits is 14999390784, while the sum is 90.

The spelling of 9989730379899 in words is "nine trillion, nine hundred eighty-nine billion, seven hundred thirty million, three hundred seventy-nine thousand, eight hundred ninety-nine".