800400111 has 32 divisors (see below), whose sum is σ = 1244160000. Its totient is φ = 448260960.

The previous prime is 800400109. The next prime is 800400163. The reversal of 800400111 is 111004008.

It is not a de Polignac number, because 800400111 - 2¹ = 800400109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800401111) 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 in 31 ways as a sum of consecutive naturals, for example, 265390 + ... + 268388.

It is an arithmetic number, because the mean of its divisors is an integer number (38880000).

Almost surely, 2^800400111 is an apocalyptic number.

800400111 is a deficient number, since it is larger than the sum of its proper divisors (443759889).

800400111 is a wasteful number, since it uses less digits than its factorization.

800400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3259.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 800400111 is about 28291.3433933421. The cubic root of 800400111 is about 928.4725034913.

Adding to 800400111 its reverse (111004008), we get a palindrome (911404119).

The spelling of 800400111 in words is "eight hundred million, four hundred thousand, one hundred eleven".