800379891 has 12 divisors (see below), whose sum is σ = 1156454832. Its totient is φ = 533424816.

The previous prime is 800379863. The next prime is 800379911. The reversal of 800379891 is 198973008.

It is not a de Polignac number, because 800379891 - 2⁵ = 800379859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (800399891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23065 + ... + 46181.

It is an arithmetic number, because the mean of its divisors is an integer number (96371236).

Almost surely, 2^800379891 is an apocalyptic number.

800379891 is a deficient number, since it is larger than the sum of its proper divisors (356074941).

800379891 is a wasteful number, since it uses less digits than its factorization.

800379891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26970 (or 26967 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 800379891 is about 28290.9860379592. The cubic root of 800379891 is about 928.4646849549.

The spelling of 800379891 in words is "eight hundred million, three hundred seventy-nine thousand, eight hundred ninety-one".