847949868 has 72 divisors (see below), whose sum is σ = 2330913312. Its totient is φ = 258826752.

The previous prime is 847949867. The next prime is 847949873. The reversal of 847949868 is 868949748.

847949868 is a `hidden beast` number, since 84 + 7 + 9 + 498 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (847949863) 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, 3921 + ... + 41367.

It is an arithmetic number, because the mean of its divisors is an integer number (32373796).

Almost surely, 2^847949868 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 847949868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1165456656).

847949868 is an abundant number, since it is smaller than the sum of its proper divisors (1482963444).

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

847949868 is a wasteful number, since it uses less digits than its factorization.

847949868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37511 (or 37506 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The square root of 847949868 is about 29119.5787744260. The cubic root of 847949868 is about 946.5060456732.

The spelling of 847949868 in words is "eight hundred forty-seven million, nine hundred forty-nine thousand, eight hundred sixty-eight".