800804879 has 4 divisors (see below), whose sum is σ = 915205584. Its totient is φ = 686404176.

The previous prime is 800804831. The next prime is 800804887. The reversal of 800804879 is 978408008.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 800804879 - 2¹² = 800800783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800804899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57200342 + ... + 57200355.

It is an arithmetic number, because the mean of its divisors is an integer number (228801396).

Almost surely, 2^800804879 is an apocalyptic number.

800804879 is a deficient number, since it is larger than the sum of its proper divisors (114400705).

800804879 is a wasteful number, since it uses less digits than its factorization.

800804879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114400704.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 800804879 is about 28298.4960554444. The cubic root of 800804879 is about 928.6289888207.

The spelling of 800804879 in words is "eight hundred million, eight hundred four thousand, eight hundred seventy-nine".