871951471 has 4 divisors (see below), whose sum is σ = 923242752. Its totient is φ = 820660192.

The previous prime is 871951447. The next prime is 871951499. The reversal of 871951471 is 174159178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 871951471 - 2⁷ = 871951343 is a prime.

It is a super-3 number, since 3×871951471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871951411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25645615 + ... + 25645648.

It is an arithmetic number, because the mean of its divisors is an integer number (230810688).

Almost surely, 2^871951471 is an apocalyptic number.

871951471 is a deficient number, since it is larger than the sum of its proper divisors (51291281).

871951471 is a wasteful number, since it uses less digits than its factorization.

871951471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51291280.

The product of its digits is 70560, while the sum is 43.

The square root of 871951471 is about 29528.8244093801. The cubic root of 871951471 is about 955.3535129383.

The spelling of 871951471 in words is "eight hundred seventy-one million, nine hundred fifty-one thousand, four hundred seventy-one".