853442873 has 4 divisors (see below), whose sum is σ = 871601280. Its totient is φ = 835284468.

The previous prime is 853442869. The next prime is 853442911. The reversal of 853442873 is 378244358.

853442873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 853442873 - 2² = 853442869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853442833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9079133 + ... + 9079226.

It is an arithmetic number, because the mean of its divisors is an integer number (217900320).

Almost surely, 2^853442873 is an apocalyptic number.

It is an amenable number.

853442873 is a deficient number, since it is larger than the sum of its proper divisors (18158407).

853442873 is a wasteful number, since it uses less digits than its factorization.

853442873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18158406.

The product of its digits is 645120, while the sum is 44.

The square root of 853442873 is about 29213.7445905177. The cubic root of 853442873 is about 948.5454649720.

The spelling of 853442873 in words is "eight hundred fifty-three million, four hundred forty-two thousand, eight hundred seventy-three".