800865404 has 12 divisors (see below), whose sum is σ = 1427958504. Its totient is φ = 392877264.

The previous prime is 800865391. The next prime is 800865419. The reversal of 800865404 is 404568008.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1888622 + ... + 1889045.

It is an arithmetic number, because the mean of its divisors is an integer number (118996542).

Almost surely, 2^800865404 is an apocalyptic number.

It is an amenable number.

800865404 is a deficient number, since it is larger than the sum of its proper divisors (627093100).

800865404 is a wasteful number, since it uses less digits than its factorization.

800865404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777724 (or 3777722 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 800865404 is about 28299.5654383596. The cubic root of 800865404 is about 928.6523835556.

The spelling of 800865404 in words is "eight hundred million, eight hundred sixty-five thousand, four hundred four".