847971 has 6 divisors (see below), whose sum is σ = 1224860. Its totient is φ = 565308.

The previous prime is 847969. The next prime is 847991. The reversal of 847971 is 179748.

847971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 847971 - 2¹ = 847969 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (847901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47101 + ... + 47118.

2⁸⁴⁷⁹⁷¹ is an apocalyptic number.

847971 is a deficient number, since it is larger than the sum of its proper divisors (376889).

847971 is a wasteful number, since it uses less digits than its factorization.

847971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94225 (or 94222 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 847971 is about 920.8534085293. The cubic root of 847971 is about 94.6513908323.

The spelling of 847971 in words is "eight hundred forty-seven thousand, nine hundred seventy-one".