867829 has 2 divisors, whose sum is σ = 867830. Its totient is φ = 867828.

The previous prime is 867827. The next prime is 867857. The reversal of 867829 is 928768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 178929 = 830^2 + 423^2 .

It is a cyclic number.

It is not a de Polignac number, because 867829 - 2¹ = 867827 is a prime.

Together with 867827, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 867791 and 867800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (867827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433914 + 433915.

It is an arithmetic number, because the mean of its divisors is an integer number (433915).

2⁸⁶⁷⁸²⁹ is an apocalyptic number.

It is an amenable number.

867829 is a deficient number, since it is larger than the sum of its proper divisors (1).

867829 is an equidigital number, since it uses as much as digits as its factorization.

867829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 867829 is about 931.5734002214. The cubic root of 867829 is about 95.3845539001.

The spelling of 867829 in words is "eight hundred sixty-seven thousand, eight hundred twenty-nine".