4040165 has 8 divisors (see below), whose sum is σ = 4865400. Its totient is φ = 3220672.

The previous prime is 4040161. The next prime is 4040173. The reversal of 4040165 is 5610404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 357604 + 3682561 = 598^2 + 1919^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4040165 - 2² = 4040161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311 + ... + 2859.

It is an arithmetic number, because the mean of its divisors is an integer number (608175).

Almost surely, 2^4040165 is an apocalyptic number.

It is an amenable number.

4040165 is a deficient number, since it is larger than the sum of its proper divisors (825235).

4040165 is a wasteful number, since it uses less digits than its factorization.

4040165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4040165 is about 2010.0161690892. The cubic root of 4040165 is about 159.2696530517.

Adding to 4040165 its reverse (5610404), we get a palindrome (9650569).

The spelling of 4040165 in words is "four million, forty thousand, one hundred sixty-five".