9889015500 has 1152 divisors, whose sum is σ = 42737909760. Its totient is φ = 1866240000.

The previous prime is 9889015489. The next prime is 9889015529. The reversal of 9889015500 is 55109889.

9889015500 is a `hidden beast` number, since 9 + 8 + 8 + 90 + 1 + 550 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 241195480 + ... + 241195520.

It is an arithmetic number, because the mean of its divisors is an integer number (37098880).

Almost surely, 2^9889015500 is an apocalyptic number.

9889015500 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9889015500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21368954880).

9889015500 is an abundant number, since it is smaller than the sum of its proper divisors (32848894260).

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

9889015500 is a wasteful number, since it uses less digits than its factorization.

9889015500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 9889015500 is about 99443.5292012507. The cubic root of 9889015500 is about 2146.4347256680.

The spelling of 9889015500 in words is "nine billion, eight hundred eighty-nine million, fifteen thousand, five hundred".