4040785 has 12 divisors (see below), whose sum is σ = 5640948. Its totient is φ = 2770656.

The previous prime is 4040783. The next prime is 4040789. The reversal of 4040785 is 5870404.

4040785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 3415104 = 791^2 + 1848^2 .

It is not a de Polignac number, because 4040785 - 2¹ = 4040783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040783) 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 11 ways as a sum of consecutive naturals, for example, 8002 + ... + 8491.

It is an arithmetic number, because the mean of its divisors is an integer number (470079).

Almost surely, 2^4040785 is an apocalyptic number.

It is an amenable number.

4040785 is a deficient number, since it is larger than the sum of its proper divisors (1600163).

4040785 is a wasteful number, since it uses less digits than its factorization.

4040785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16512 (or 16505 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4040785 is about 2010.1703907878. The cubic root of 4040785 is about 159.2777997598.

The spelling of 4040785 in words is "four million, forty thousand, seven hundred eighty-five".