4065109 has 4 divisors (see below), whose sum is σ = 4164300. Its totient is φ = 3965920.

The previous prime is 4065097. The next prime is 4065119. The reversal of 4065109 is 9015604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1575025 + 2490084 = 1255^2 + 1578^2 .

It is a cyclic number.

It is not a de Polignac number, because 4065109 - 2⁹ = 4064597 is a prime.

It is a super-2 number, since 2×4065109² = 33050222363762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49534 + ... + 49615.

It is an arithmetic number, because the mean of its divisors is an integer number (1041075).

Almost surely, 2^4065109 is an apocalyptic number.

It is an amenable number.

4065109 is a deficient number, since it is larger than the sum of its proper divisors (99191).

4065109 is an equidigital number, since it uses as much as digits as its factorization.

4065109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99190.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 4065109 is about 2016.2115464405. The cubic root of 4065109 is about 159.5967580156.

The spelling of 4065109 in words is "four million, sixty-five thousand, one hundred nine".