853923847 has 4 divisors (see below), whose sum is σ = 975912976. Its totient is φ = 731934720.

The previous prime is 853923841. The next prime is 853923857. The reversal of 853923847 is 748329358.

853923847 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.

It is a cyclic number.

It is not a de Polignac number, because 853923847 - 2³ = 853923839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 853923847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853923841) 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, 60994554 + ... + 60994567.

It is an arithmetic number, because the mean of its divisors is an integer number (243978244).

Almost surely, 2^853923847 is an apocalyptic number.

853923847 is a deficient number, since it is larger than the sum of its proper divisors (121989129).

853923847 is a wasteful number, since it uses less digits than its factorization.

853923847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121989128.

The product of its digits is 1451520, while the sum is 49.

The square root of 853923847 is about 29221.9754123502. The cubic root of 853923847 is about 948.7236218012.

The spelling of 853923847 in words is "eight hundred fifty-three million, nine hundred twenty-three thousand, eight hundred forty-seven".