806444559 has 16 divisors (see below), whose sum is σ = 1195302240. Its totient is φ = 537373440.

The previous prime is 806444543. The next prime is 806444567. The reversal of 806444559 is 955444608.

It is not a de Polignac number, because 806444559 - 2⁴ = 806444543 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806444579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63199 + ... + 74879.

It is an arithmetic number, because the mean of its divisors is an integer number (74706390).

Almost surely, 2^806444559 is an apocalyptic number.

806444559 is a deficient number, since it is larger than the sum of its proper divisors (388857681).

806444559 is a wasteful number, since it uses less digits than its factorization.

806444559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14247 (or 14241 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 806444559 is about 28397.9675152994. The cubic root of 806444559 is about 930.8038523307.

The spelling of 806444559 in words is "eight hundred six million, four hundred forty-four thousand, five hundred fifty-nine".