869291 has 2 divisors, whose sum is σ = 869292. Its totient is φ = 869290.

The previous prime is 869273. The next prime is 869293. The reversal of 869291 is 192968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869291 - 2¹⁰ = 868267 is a prime.

Together with 869293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (869293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434645 + 434646.

It is an arithmetic number, because the mean of its divisors is an integer number (434646).

2⁸⁶⁹²⁹¹ is an apocalyptic number.

869291 is a deficient number, since it is larger than the sum of its proper divisors (1).

869291 is an equidigital number, since it uses as much as digits as its factorization.

869291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 869291 is about 932.3577639512. The cubic root of 869291 is about 95.4380874807.

The spelling of 869291 in words is "eight hundred sixty-nine thousand, two hundred ninety-one".