859843404 has 192 divisors, whose sum is σ = 2769715200. Its totient is φ = 225115200.

The previous prime is 859843393. The next prime is 859843447. The reversal of 859843404 is 404348958.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 859843404.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 444319 + ... + 446249.

It is an arithmetic number, because the mean of its divisors is an integer number (14425600).

Almost surely, 2^859843404 is an apocalyptic number.

859843404 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 859843404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384857600).

859843404 is an abundant number, since it is smaller than the sum of its proper divisors (1909871796).

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

859843404 is a wasteful number, since it uses less digits than its factorization.

859843404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 859843404 is about 29323.0865360385. The cubic root of 859843404 is about 950.9108176975.

It can be divided in two parts, 85 and 9843404, that added together give a palindrome (9843489).

The spelling of 859843404 in words is "eight hundred fifty-nine million, eight hundred forty-three thousand, four hundred four".