9599981440 has 128 divisors (see below), whose sum is σ = 26524324800. Its totient is φ = 3254304768.

The previous prime is 9599981423. The next prime is 9599981459. The reversal of 9599981440 is 441899959.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

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, 386682 + ... + 410758.

Almost surely, 2^9599981440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9599981440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13262162400).

9599981440 is an abundant number, since it is smaller than the sum of its proper divisors (16924343360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9599981440 is a wasteful number, since it uses less digits than its factorization.

9599981440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24192 (or 24180 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 58.

The square root of 9599981440 is about 97979.4949976780. The cubic root of 9599981440 is about 2125.3157687155.

The spelling of 9599981440 in words is "nine billion, five hundred ninety-nine million, nine hundred eighty-one thousand, four hundred forty".