918871 has 4 divisors (see below), whose sum is σ = 948544. Its totient is φ = 889200.

The previous prime is 918857. The next prime is 918877. The reversal of 918871 is 178819.

918871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 918871 - 2⁵ = 918839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918877) 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, 14790 + ... + 14851.

It is an arithmetic number, because the mean of its divisors is an integer number (237136).

2⁹¹⁸⁸⁷¹ is an apocalyptic number.

918871 is a deficient number, since it is larger than the sum of its proper divisors (29673).

918871 is a wasteful number, since it uses less digits than its factorization.

918871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29672.

The product of its digits is 4032, while the sum is 34.

The square root of 918871 is about 958.5775920602. The cubic root of 918871 is about 97.2190818154.

The spelling of 918871 in words is "nine hundred eighteen thousand, eight hundred seventy-one".