806889811 has 24 divisors (see below), whose sum is σ = 1014328224. Its totient is φ = 636209280.

The previous prime is 806889803. The next prime is 806889833. The reversal of 806889811 is 118988608.

It is not a de Polignac number, because 806889811 - 2³ = 806889803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (806889211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196071 + ... + 200143.

It is an arithmetic number, because the mean of its divisors is an integer number (42263676).

Almost surely, 2^806889811 is an apocalyptic number.

806889811 is a deficient number, since it is larger than the sum of its proper divisors (207438413).

806889811 is a wasteful number, since it uses less digits than its factorization.

806889811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411 (or 4404 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 49.

The square root of 806889811 is about 28405.8059382233. The cubic root of 806889811 is about 930.9751251198.

It can be divided in two parts, 8068 and 89811, that added together give a palindrome (97879).

The spelling of 806889811 in words is "eight hundred six million, eight hundred eighty-nine thousand, eight hundred eleven".