855939573 has 12 divisors (see below), whose sum is σ = 1236863628. Its totient is φ = 570392640.

The previous prime is 855939563. The next prime is 855939599. The reversal of 855939573 is 375939558.

It is a happy number.

855939573 is a `hidden beast` number, since 8 + 559 + 39 + 57 + 3 = 666.

855939573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 770229009 + 85710564 = 27753^2 + 9258^2 .

It is not a de Polignac number, because 855939573 - 2⁶ = 855939509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855939523) 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, 5383 + ... + 41723.

It is an arithmetic number, because the mean of its divisors is an integer number (103071969).

Almost surely, 2^855939573 is an apocalyptic number.

It is an amenable number.

855939573 is a deficient number, since it is larger than the sum of its proper divisors (380924055).

855939573 is a wasteful number, since it uses less digits than its factorization.

855939573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38964 (or 38961 counting only the distinct ones).

The product of its digits is 5103000, while the sum is 54.

The square root of 855939573 is about 29256.4449822599. Note that the first 3 decimals coincide. The cubic root of 855939573 is about 949.4695369103.

The spelling of 855939573 in words is "eight hundred fifty-five million, nine hundred thirty-nine thousand, five hundred seventy-three".