4089109 has 4 divisors (see below), whose sum is σ = 4166316. Its totient is φ = 4011904.

The previous prime is 4089097. The next prime is 4089133. The reversal of 4089109 is 9019804.

4089109 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

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 2992900 + 1096209 = 1730^2 + 1047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4089109 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4089139) 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, 38524 + ... + 38629.

It is an arithmetic number, because the mean of its divisors is an integer number (1041579).

Almost surely, 2^4089109 is an apocalyptic number.

It is an amenable number.

4089109 is a deficient number, since it is larger than the sum of its proper divisors (77207).

4089109 is an equidigital number, since it uses as much as digits as its factorization.

4089109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77206.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 4089109 is about 2022.1545440445. The cubic root of 4089109 is about 159.9102230726.

The spelling of 4089109 in words is "four million, eighty-nine thousand, one hundred nine".