8997447888 has 240 divisors, whose sum is σ = 29759970240. Its totient is φ = 2501683200.

The previous prime is 8997447881. The next prime is 8997447923. The reversal of 8997447888 is 8887447998.

8997447888 is a `hidden beast` number, since 8 + 9 + 9 + 74 + 478 + 88 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997447881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3684748 + ... + 3687188.

It is an arithmetic number, because the mean of its divisors is an integer number (123999876).

Almost surely, 2^8997447888 is an apocalyptic number.

8997447888 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 8997447888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14879985120).

8997447888 is an abundant number, since it is smaller than the sum of its proper divisors (20762522352).

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

8997447888 is a wasteful number, since it uses less digits than its factorization.

8997447888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658 (or 2649 counting only the distinct ones).

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

The square root of 8997447888 is about 94854.8780400882. The cubic root of 8997447888 is about 2079.8871893946.

The spelling of 8997447888 in words is "eight billion, nine hundred ninety-seven million, four hundred forty-seven thousand, eight hundred eighty-eight".