9969889699 has 16 divisors (see below), whose sum is σ = 12579759360. Its totient is φ = 7675140960.

The previous prime is 9969889697. The next prime is 9969889759.

9969889699 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9969889699 - 2¹ = 9969889697 is a prime.

It is a super-2 number, since 2×9969889699² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9969889691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773604 + ... + 786385.

It is an arithmetic number, because the mean of its divisors is an integer number (786234960).

Almost surely, 2^9969889699 is an apocalyptic number.

9969889699 is a deficient number, since it is larger than the sum of its proper divisors (2609869661).

9969889699 is a wasteful number, since it uses less digits than its factorization.

9969889699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560090.

The product of its digits is 1224440064, while the sum is 82.

The square root of 9969889699 is about 99849.3349952818. The cubic root of 9969889699 is about 2152.2701601878.

The spelling of 9969889699 in words is "nine billion, nine hundred sixty-nine million, eight hundred eighty-nine thousand, six hundred ninety-nine".