871894 has 4 divisors (see below), whose sum is σ = 1307844. Its totient is φ = 435946.

The previous prime is 871883. The next prime is 871901. The reversal of 871894 is 498178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498178 = 2 ⋅249089.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217972 + ... + 217975.

It is an arithmetic number, because the mean of its divisors is an integer number (326961).

2⁸⁷¹⁸⁹⁴ is an apocalyptic number.

871894 is a deficient number, since it is larger than the sum of its proper divisors (435950).

871894 is a wasteful number, since it uses less digits than its factorization.

871894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435949.

The product of its digits is 16128, while the sum is 37.

The square root of 871894 is about 933.7526439052. The cubic root of 871894 is about 95.5332523113.

The spelling of 871894 in words is "eight hundred seventy-one thousand, eight hundred ninety-four".