4045805 has 8 divisors (see below), whose sum is σ = 4866144. Its totient is φ = 3229200.

The previous prime is 4045787. The next prime is 4045817. The reversal of 4045805 is 5085404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4045805 - 2⁸ = 4045549 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2870 + ... + 4040.

It is an arithmetic number, because the mean of its divisors is an integer number (608268).

Almost surely, 2^4045805 is an apocalyptic number.

It is an amenable number.

4045805 is a deficient number, since it is larger than the sum of its proper divisors (820339).

4045805 is a wasteful number, since it uses less digits than its factorization.

4045805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 4045805 is about 2011.4186535876. The cubic root of 4045805 is about 159.3437311461.

The spelling of 4045805 in words is "four million, forty-five thousand, eight hundred five".