4093209856 has 54 divisors (see below), whose sum is σ = 8266973330. Its totient is φ = 2022534144.

The previous prime is 4093209847. The next prime is 4093209877. The reversal of 4093209856 is 6589023904.

It can be written as a sum of positive squares in only one way, i.e., 3755238400 + 337971456 = 61280^2 + 18384^2 .

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 5 ways as a sum of consecutive naturals, for example, 10687041 + ... + 10687423.

Almost surely, 2^4093209856 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 4093209856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4133486665).

4093209856 is an abundant number, since it is smaller than the sum of its proper divisors (4173763474).

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

4093209856 is an frugal number, since it uses more digits than its factorization.

4093209856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 4093209856 is about 63978.1982866039. The cubic root of 4093209856 is about 1599.6366174770.

The spelling of 4093209856 in words is "four billion, ninety-three million, two hundred nine thousand, eight hundred fifty-six".