4041805 has 4 divisors (see below), whose sum is σ = 4850172. Its totient is φ = 3233440.

The previous prime is 4041803. The next prime is 4041827. The reversal of 4041805 is 5081404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2064969 + 1976836 = 1437^2 + 1406^2 .

It is not a de Polignac number, because 4041805 - 2¹ = 4041803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4041803) 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 3 ways as a sum of consecutive naturals, for example, 404176 + ... + 404185.

It is an arithmetic number, because the mean of its divisors is an integer number (1212543).

Almost surely, 2^4041805 is an apocalyptic number.

It is an amenable number.

4041805 is a deficient number, since it is larger than the sum of its proper divisors (808367).

4041805 is an equidigital number, since it uses as much as digits as its factorization.

4041805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808366.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 4041805 is about 2010.4240846150. The cubic root of 4041805 is about 159.2912005955.

It can be divided in two parts, 404 and 1805, that added together give a square (2209 = 47²).

The spelling of 4041805 in words is "four million, forty-one thousand, eight hundred five".