4006844856 has 144 divisors (see below), whose sum is σ = 13059235800. Its totient is φ = 1105308288.

The previous prime is 4006844851. The next prime is 4006844857. The reversal of 4006844856 is 6584486004.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006844851) 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 35 ways as a sum of consecutive naturals, for example, 82731 + ... + 121893.

Almost surely, 2^4006844856 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 4006844856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6529617900).

4006844856 is an abundant number, since it is smaller than the sum of its proper divisors (9052390944).

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

4006844856 is a wasteful number, since it uses less digits than its factorization.

4006844856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39218 (or 39204 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The square root of 4006844856 is about 63299.6434113179. The cubic root of 4006844856 is about 1588.3059969474.

The spelling of 4006844856 in words is "four billion, six million, eight hundred forty-four thousand, eight hundred fifty-six".