850823 has 2 divisors, whose sum is σ = 850824. Its totient is φ = 850822.

The previous prime is 850807. The next prime is 850849. The reversal of 850823 is 328058.

It is an a-pointer prime, because the next prime (850849) can be obtained adding 850823 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 850823 - 2⁴ = 850807 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 850792 and 850801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425411 + 425412.

It is an arithmetic number, because the mean of its divisors is an integer number (425412).

2⁸⁵⁰⁸²³ is an apocalyptic number.

850823 is a deficient number, since it is larger than the sum of its proper divisors (1).

850823 is an equidigital number, since it uses as much as digits as its factorization.

850823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 850823 is about 922.4006721593. The cubic root of 850823 is about 94.7573864747.

The spelling of 850823 in words is "eight hundred fifty thousand, eight hundred twenty-three".