9989938399899 has 8 divisors (see below), whose sum is σ = 13332104438032. Its totient is φ = 6653865647520.

The previous prime is 9989938399871. The next prime is 9989938399907.

9989938399899 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 9989938399899 - 2¹² = 9989938395803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9989938397899) 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, 1523317612 + ... + 1523324169.

It is an arithmetic number, because the mean of its divisors is an integer number (1666513054754).

Almost surely, 2^{9989938399899} is an apocalyptic number.

9989938399899 is a deficient number, since it is larger than the sum of its proper divisors (3342166038133).

9989938399899 is a wasteful number, since it uses less digits than its factorization.

9989938399899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046642877.

The product of its digits is 198359290368, while the sum is 102.

The spelling of 9989938399899 in words is "nine trillion, nine hundred eighty-nine billion, nine hundred thirty-eight million, three hundred ninety-nine thousand, eight hundred ninety-nine".