859427838 has 12 divisors (see below), whose sum is σ = 1862093688. Its totient is φ = 286475940.

The previous prime is 859427837. The next prime is 859427909. The reversal of 859427838 is 838724958.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859427837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23872978 + ... + 23873013.

It is an arithmetic number, because the mean of its divisors is an integer number (155174474).

Almost surely, 2^859427838 is an apocalyptic number.

859427838 is an abundant number, since it is smaller than the sum of its proper divisors (1002665850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

859427838 is a wasteful number, since it uses less digits than its factorization.

859427838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47745999 (or 47745996 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 859427838 is about 29315.9996930004. Note that the first 3 decimals coincide. The cubic root of 859427838 is about 950.7575999209.

The spelling of 859427838 in words is "eight hundred fifty-nine million, four hundred twenty-seven thousand, eight hundred thirty-eight".