9271447856 has 160 divisors (see below), whose sum is σ = 20651535360. Its totient is φ = 4028893440.

The previous prime is 9271447849. The next prime is 9271447859. The reversal of 9271447856 is 6587441729.

It is a junction number, because it is equal to n+sod(n) for n = 9271447798 and 9271447807.

It is not an unprimeable number, because it can be changed into a prime (9271447859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59053730 + ... + 59053886.

It is an arithmetic number, because the mean of its divisors is an integer number (129072096).

Almost surely, 2^9271447856 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 9271447856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10325767680).

9271447856 is an abundant number, since it is smaller than the sum of its proper divisors (11380087504).

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

9271447856 is a wasteful number, since it uses less digits than its factorization.

9271447856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 276 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The square root of 9271447856 is about 96288.3578424723. The cubic root of 9271447856 is about 2100.7894126623.

The spelling of 9271447856 in words is "nine billion, two hundred seventy-one million, four hundred forty-seven thousand, eight hundred fifty-six".