4000000844 has 12 divisors (see below), whose sum is σ = 8000001744. Its totient is φ = 1714286064.

The previous prime is 4000000831. The next prime is 4000000861. The reversal of 4000000844 is 4480000004.

4000000844 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71428559 + ... + 71428614.

It is an arithmetic number, because the mean of its divisors is an integer number (666666812).

Almost surely, 2^4000000844 is an apocalyptic number.

It is an amenable number.

4000000844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4000000844 is a wasteful number, since it uses less digits than its factorization.

4000000844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142857184 (or 142857182 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 4000000844 is about 63245.5598757731. The cubic root of 4000000844 is about 1587.4011636154.

Adding to 4000000844 its reverse (4480000004), we get a palindrome (8480000848).

The spelling of 4000000844 in words is "four billion, eight hundred forty-four", and thus it is an aban number.