4109665 has 16 divisors (see below), whose sum is σ = 5968512. Its totient is φ = 2651904.

The previous prime is 4109653. The next prime is 4109669. The reversal of 4109665 is 5669014.

It is a cyclic number.

It is not a de Polignac number, because 4109665 - 2⁷ = 4109537 is a prime.

It is a Duffinian number.

4109665 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4109669) 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 15 ways as a sum of consecutive naturals, for example, 2859 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (373032).

Almost surely, 2^4109665 is an apocalyptic number.

It is an amenable number.

4109665 is a deficient number, since it is larger than the sum of its proper divisors (1858847).

4109665 is a wasteful number, since it uses less digits than its factorization.

4109665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6936.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 4109665 is about 2027.2308699307. The cubic root of 4109665 is about 160.1777321848.

It can be divided in two parts, 4109 and 665, that added together give a palindrome (4774).

The spelling of 4109665 in words is "four million, one hundred nine thousand, six hundred sixty-five".