4000844008 has 32 divisors (see below), whose sum is σ = 8579885760. Its totient is φ = 1713317760.

The previous prime is 4000843993. The next prime is 4000844009. The reversal of 4000844008 is 8004480004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (4000844009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46935 + ... + 101017.

It is an arithmetic number, because the mean of its divisors is an integer number (268121430).

Almost surely, 2^4000844008 is an apocalyptic number.

It is an amenable number.

4000844008 is an abundant number, since it is smaller than the sum of its proper divisors (4579041752).

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

4000844008 is a wasteful number, since it uses less digits than its factorization.

4000844008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55417 (or 55413 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 4000844008 is about 63252.2253205371. The cubic root of 4000844008 is about 1587.5126923820.

The spelling of 4000844008 in words is "four billion, eight hundred forty-four thousand, eight".