852391 has 2 divisors, whose sum is σ = 852392. Its totient is φ = 852390.

The previous prime is 852367. The next prime is 852409. The reversal of 852391 is 193258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 852391 - 2⁷ = 852263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426195 + 426196.

It is an arithmetic number, because the mean of its divisors is an integer number (426196).

2⁸⁵²³⁹¹ is an apocalyptic number.

852391 is a deficient number, since it is larger than the sum of its proper divisors (1).

852391 is an equidigital number, since it uses as much as digits as its factorization.

852391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 852391 is about 923.2502369347. The cubic root of 852391 is about 94.8155608940.

The spelling of 852391 in words is "eight hundred fifty-two thousand, three hundred ninety-one".