859389916 has 144 divisors (see below), whose sum is σ = 2052787968. Its totient is φ = 306915840.

The previous prime is 859389913. The next prime is 859389941. The reversal of 859389916 is 619983958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859389913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2476455 + ... + 2476801.

It is an arithmetic number, because the mean of its divisors is an integer number (14255472).

Almost surely, 2^859389916 is an apocalyptic number.

859389916 is a gapful number since it is divisible by the number (86) 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 859389916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1026393984).

859389916 is an abundant number, since it is smaller than the sum of its proper divisors (1193398052).

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

859389916 is a wasteful number, since it uses less digits than its factorization.

859389916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 427 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 58.

The square root of 859389916 is about 29315.3529059433. The cubic root of 859389916 is about 950.7436157490.

The spelling of 859389916 in words is "eight hundred fifty-nine million, three hundred eighty-nine thousand, nine hundred sixteen".