847471968 has 144 divisors (see below), whose sum is σ = 2821736736. Its totient is φ = 236206080.

The previous prime is 847471951. The next prime is 847471969. The reversal of 847471968 is 869174748.

It is a happy number.

847471968 is a `hidden beast` number, since 84 + 7 + 471 + 96 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847471969) 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, 77530 + ... + 87782.

It is an arithmetic number, because the mean of its divisors is an integer number (19595394).

Almost surely, 2^847471968 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 847471968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410868368).

847471968 is an abundant number, since it is smaller than the sum of its proper divisors (1974264768).

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

847471968 is a wasteful number, since it uses less digits than its factorization.

847471968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10317 (or 10306 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 847471968 is about 29111.3717986631. The cubic root of 847471968 is about 946.3281970130.

The spelling of 847471968 in words is "eight hundred forty-seven million, four hundred seventy-one thousand, nine hundred sixty-eight".