4040565 has 16 divisors (see below), whose sum is σ = 6507648. Its totient is φ = 2140736.

The previous prime is 4040563. The next prime is 4040573. The reversal of 4040565 is 5650404.

It is a cyclic number.

It is not a de Polignac number, because 4040565 - 2¹ = 4040563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1699 + ... + 3311.

It is an arithmetic number, because the mean of its divisors is an integer number (406728).

Almost surely, 2^4040565 is an apocalyptic number.

It is an amenable number.

4040565 is a deficient number, since it is larger than the sum of its proper divisors (2467083).

4040565 is a wasteful number, since it uses less digits than its factorization.

4040565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 4040565 is about 2010.1156683136. The cubic root of 4040565 is about 159.2749090878.

Adding to 4040565 its reverse (5650404), we get a palindrome (9690969).

It can be divided in two parts, 40405 and 65, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 4040565 in words is "four million, forty thousand, five hundred sixty-five".