800040844 has 6 divisors (see below), whose sum is σ = 1400071484. Its totient is φ = 400020420.

The previous prime is 800040841. The next prime is 800040863. The reversal of 800040844 is 448040008.

It is a happy number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (800040841) 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 as a sum of consecutive naturals, namely, 100005102 + ... + 100005109.

Almost surely, 2^800040844 is an apocalyptic number.

It is an amenable number.

800040844 is a deficient number, since it is larger than the sum of its proper divisors (600030640).

800040844 is a wasteful number, since it uses less digits than its factorization.

800040844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200010215 (or 200010213 counting only the distinct ones).

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

The square root of 800040844 is about 28284.9932649806. The cubic root of 800040844 is about 928.3335648749. Note that the first 3 decimals are identical.

The spelling of 800040844 in words is "eight hundred million, forty thousand, eight hundred forty-four".