853723971 has 12 divisors (see below), whose sum is σ = 1233999000. Its totient is φ = 568760640.

The previous prime is 853723963. The next prime is 853724009. The reversal of 853723971 is 179327358.

It is a happy number.

853723971 is a `hidden beast` number, since 8 + 537 + 23 + 97 + 1 = 666.

853723971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 853723971 - 2³ = 853723963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (853727971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18150 + ... + 45131.

It is an arithmetic number, because the mean of its divisors is an integer number (102833250).

Almost surely, 2^853723971 is an apocalyptic number.

853723971 is a deficient number, since it is larger than the sum of its proper divisors (380275029).

853723971 is a wasteful number, since it uses less digits than its factorization.

853723971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64786 (or 64783 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 853723971 is about 29218.5552517574. Note that the first 3 decimals coincide. The cubic root of 853723971 is about 948.6495941696.

The spelling of 853723971 in words is "eight hundred fifty-three million, seven hundred twenty-three thousand, nine hundred seventy-one".