858358030940 has 72 divisors (see below), whose sum is σ = 1871410612176. Its totient is φ = 330691334400.

The previous prime is 858358030927. The next prime is 858358030961. The reversal of 858358030940 is 49030853858.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3949592 + ... + 4161248.

It is an arithmetic number, because the mean of its divisors is an integer number (25991814058).

Almost surely, 2^858358030940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858358030940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935705306088).

858358030940 is an abundant number, since it is smaller than the sum of its proper divisors (1013052581236).

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

858358030940 is a wasteful number, since it uses less digits than its factorization.

858358030940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211939 (or 211906 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 858358030940 in words is "eight hundred fifty-eight billion, three hundred fifty-eight million, thirty thousand, nine hundred forty".