871229 has 2 divisors, whose sum is σ = 871230. Its totient is φ = 871228.

The previous prime is 871181. The next prime is 871231. The reversal of 871229 is 922178.

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., 688900 + 182329 = 830^2 + 427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-871229 is a prime.

Together with 871231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (871249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435614 + 435615.

It is an arithmetic number, because the mean of its divisors is an integer number (435615).

2⁸⁷¹²²⁹ is an apocalyptic number.

It is an amenable number.

871229 is a deficient number, since it is larger than the sum of its proper divisors (1).

871229 is an equidigital number, since it uses as much as digits as its factorization.

871229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 871229 is about 933.3964859587. The cubic root of 871229 is about 95.5089581612.

The spelling of 871229 in words is "eight hundred seventy-one thousand, two hundred twenty-nine".