805444549 has 32 divisors (see below), whose sum is σ = 1032433920. Its totient is φ = 611366400.

The previous prime is 805444537. The next prime is 805444553. The reversal of 805444549 is 945444508.

It is not a de Polignac number, because 805444549 - 2¹⁵ = 805411781 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805444529) 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 31 ways as a sum of consecutive naturals, for example, 225822 + ... + 229360.

It is an arithmetic number, because the mean of its divisors is an integer number (32263560).

Almost surely, 2^805444549 is an apocalyptic number.

It is an amenable number.

805444549 is a deficient number, since it is larger than the sum of its proper divisors (226989371).

805444549 is a wasteful number, since it uses less digits than its factorization.

805444549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661.

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 805444549 is about 28380.3549836855. The cubic root of 805444549 is about 930.4189537208.

The spelling of 805444549 in words is "eight hundred five million, four hundred forty-four thousand, five hundred forty-nine".