9999091140 has 96 divisors (see below), whose sum is σ = 28812478464. Its totient is φ = 2589674880.

The previous prime is 9999091051. The next prime is 9999091177. The reversal of 9999091140 is 411909999.

9999091140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 355887 + ... + 382953.

It is an arithmetic number, because the mean of its divisors is an integer number (300129984).

Almost surely, 2^9999091140 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 9999091140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14406239232).

9999091140 is an abundant number, since it is smaller than the sum of its proper divisors (18813387324).

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

9999091140 is a wasteful number, since it uses less digits than its factorization.

9999091140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27257 (or 27255 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 51.

The square root of 9999091140 is about 99995.4555967420. The cubic root of 9999091140 is about 2154.3694187373.

The spelling of 9999091140 in words is "nine billion, nine hundred ninety-nine million, ninety-one thousand, one hundred forty".