853423 has 4 divisors (see below), whose sum is σ = 898360. Its totient is φ = 808488.

The previous prime is 853403. The next prime is 853427. The reversal of 853423 is 324358.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 853423 - 2¹³ = 845231 is a prime.

It is a Duffinian number.

853423 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853427) 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 in 3 ways as a sum of consecutive naturals, for example, 22440 + ... + 22477.

It is an arithmetic number, because the mean of its divisors is an integer number (224590).

2⁸⁵³⁴²³ is an apocalyptic number.

853423 is a deficient number, since it is larger than the sum of its proper divisors (44937).

853423 is a wasteful number, since it uses less digits than its factorization.

853423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44936.

The product of its digits is 2880, while the sum is 25.

The square root of 853423 is about 923.8089629355. The cubic root of 853423 is about 94.8538102405.

The spelling of 853423 in words is "eight hundred fifty-three thousand, four hundred twenty-three".