800838911 has 2 divisors, whose sum is σ = 800838912. Its totient is φ = 800838910.

The previous prime is 800838901. The next prime is 800838917. The reversal of 800838911 is 119838008.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800838911 is a prime.

It is a super-2 number, since 2×800838911² = 1282685922743331842, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800838917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400419455 + 400419456.

It is an arithmetic number, because the mean of its divisors is an integer number (400419456).

Almost surely, 2^800838911 is an apocalyptic number.

800838911 is a deficient number, since it is larger than the sum of its proper divisors (1).

800838911 is an equidigital number, since it uses as much as digits as its factorization.

800838911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 800838911 is about 28299.0973530959. The cubic root of 800838911 is about 928.6421433585.

The spelling of 800838911 in words is "eight hundred million, eight hundred thirty-eight thousand, nine hundred eleven".