871289 has 2 divisors, whose sum is σ = 871290. Its totient is φ = 871288.

The previous prime is 871271. The next prime is 871303. The reversal of 871289 is 982178.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 75625 = 892^2 + 275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (871229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435644 + 435645.

It is an arithmetic number, because the mean of its divisors is an integer number (435645).

2⁸⁷¹²⁸⁹ is an apocalyptic number.

It is an amenable number.

871289 is a deficient number, since it is larger than the sum of its proper divisors (1).

871289 is an equidigital number, since it uses as much as digits as its factorization.

871289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 35.

The square root of 871289 is about 933.4286260877. The cubic root of 871289 is about 95.5111506218.

Subtracting 871289 from its reverse (982178), we obtain a square (110889 = 333²).

The spelling of 871289 in words is "eight hundred seventy-one thousand, two hundred eighty-nine".