859638213 has 36 divisors (see below), whose sum is σ = 1494256140. Its totient is φ = 474276096.

The previous prime is 859638203. The next prime is 859638229. The reversal of 859638213 is 312836958.

It is a happy number.

859638213 is a `hidden beast` number, since 8 + 5 + 9 + 638 + 2 + 1 + 3 = 666.

859638213 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 632924964 + 226713249 = 25158^2 + 15057^2 .

It is not a de Polignac number, because 859638213 - 2⁶ = 859638149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859638203) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20820 + ... + 46397.

It is an arithmetic number, because the mean of its divisors is an integer number (41507115).

Almost surely, 2^859638213 is an apocalyptic number.

It is an amenable number.

859638213 is a deficient number, since it is larger than the sum of its proper divisors (634617927).

859638213 is a wasteful number, since it uses less digits than its factorization.

859638213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67266 (or 67256 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 859638213 is about 29319.5875312051. The cubic root of 859638213 is about 950.8351706423.

The spelling of 859638213 in words is "eight hundred fifty-nine million, six hundred thirty-eight thousand, two hundred thirteen".