9917389448 has 36 divisors (see below), whose sum is σ = 18804996735. Its totient is φ = 4903346176.

The previous prime is 9917389441. The next prime is 9917389499. The reversal of 9917389448 is 8449837199.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

9917389448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 9903832324 + 13557124 = 99518^2 + 3682^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=70418.

It is a super-2 number, since 2×9917389448² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9917389441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38588936 + ... + 38589192.

Almost surely, 2^9917389448 is an apocalyptic number.

It is an amenable number.

9917389448 is a deficient number, since it is larger than the sum of its proper divisors (8887607287).

9917389448 is an equidigital number, since it uses as much as digits as its factorization.

9917389448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 396 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 62.

The square root of 9917389448 is about 99586.0906351886. The cubic root of 9917389448 is about 2148.4856433995.

The spelling of 9917389448 in words is "nine billion, nine hundred seventeen million, three hundred eighty-nine thousand, four hundred forty-eight".