8947749888 has 528 divisors, whose sum is σ = 33476212224. Its totient is φ = 2319114240.

The previous prime is 8947749847. The next prime is 8947749911. The reversal of 8947749888 is 8889477498.

It is a tau number, because it is divible by the number of its divisors (528).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19159831 + ... + 19160297.

Almost surely, 2^8947749888 is an apocalyptic number.

8947749888 is a gapful number since it is divisible by the number (88) 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 8947749888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16738106112).

8947749888 is an abundant number, since it is smaller than the sum of its proper divisors (24528462336).

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

8947749888 is a wasteful number, since it uses less digits than its factorization.

8947749888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 490 counting only the distinct ones).

The product of its digits is 260112384, while the sum is 72.

The square root of 8947749888 is about 94592.5466831293. The cubic root of 8947749888 is about 2076.0506519767.

The spelling of 8947749888 in words is "eight billion, nine hundred forty-seven million, seven hundred forty-nine thousand, eight hundred eighty-eight".