859296440 has 64 divisors (see below), whose sum is σ = 2025768960. Its totient is φ = 327634560.

The previous prime is 859296439. The next prime is 859296443. The reversal of 859296440 is 44692958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859296443) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 77909 + ... + 88251.

It is an arithmetic number, because the mean of its divisors is an integer number (31652640).

Almost surely, 2^859296440 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 859296440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1012884480).

859296440 is an abundant number, since it is smaller than the sum of its proper divisors (1166472520).

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

859296440 is a wasteful number, since it uses less digits than its factorization.

859296440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10452 (or 10448 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 859296440 is about 29313.7585444105. The cubic root of 859296440 is about 950.7091436462.

The spelling of 859296440 in words is "eight hundred fifty-nine million, two hundred ninety-six thousand, four hundred forty".