8947871 has 6 divisors (see below), whose sum is σ = 9246816. Its totient is φ = 8658300.

The previous prime is 8947853. The next prime is 8947889. The reversal of 8947871 is 1787498.

It is an interprime number because it is at equal distance from previous prime (8947853) and next prime (8947889).

It is a de Polignac number, because none of the positive numbers 2^k-8947871 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8947801) 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, 3695 + ... + 5616.

It is an arithmetic number, because the mean of its divisors is an integer number (1541136).

Almost surely, 2^8947871 is an apocalyptic number.

8947871 is a deficient number, since it is larger than the sum of its proper divisors (298945).

8947871 is an equidigital number, since it uses as much as digits as its factorization.

8947871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373 (or 9342 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 8947871 is about 2991.2992160598. The cubic root of 8947871 is about 207.6060018708.

The spelling of 8947871 in words is "eight million, nine hundred forty-seven thousand, eight hundred seventy-one".