9119121284 has 72 divisors (see below), whose sum is σ = 20457093888. Its totient is φ = 3523625280.

The previous prime is 9119121247. The next prime is 9119121289. The reversal of 9119121284 is 4821219119.

It is not an unprimeable number, because it can be changed into a prime (9119121289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67949 + ... + 151179.

It is an arithmetic number, because the mean of its divisors is an integer number (284126304).

Almost surely, 2^9119121284 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 9119121284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10228546944).

9119121284 is an abundant number, since it is smaller than the sum of its proper divisors (11337972604).

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

9119121284 is a wasteful number, since it uses less digits than its factorization.

9119121284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83305 (or 83296 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 9119121284 is about 95494.0903092961. The cubic root of 9119121284 is about 2089.2207502224.

The spelling of 9119121284 in words is "nine billion, one hundred nineteen million, one hundred twenty-one thousand, two hundred eighty-four".