9988448899 has 16 divisors (see below), whose sum is σ = 12113224704. Its totient is φ = 8111527200.

The previous prime is 9988448893. The next prime is 9988448929.

9988448899 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 9988448899 - 2³³ = 1398514307 is a prime.

It is a super-2 number, since 2×9988448899² (a number of 21 digits) contains 22 as substring.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9988448893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122169 + ... + 1131034.

It is an arithmetic number, because the mean of its divisors is an integer number (757076544).

Almost surely, 2^9988448899 is an apocalyptic number.

9988448899 is a deficient number, since it is larger than the sum of its proper divisors (2124775805).

9988448899 is a wasteful number, since it uses less digits than its factorization.

9988448899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253258.

The product of its digits is 429981696, while the sum is 76.

The square root of 9988448899 is about 99942.2278068685. The cubic root of 9988448899 is about 2153.6048340014.

The spelling of 9988448899 in words is "nine billion, nine hundred eighty-eight million, four hundred forty-eight thousand, eight hundred ninety-nine".