3689109 has 6 divisors (see below), whose sum is σ = 5328726. Its totient is φ = 2459400.

The previous prime is 3689069. The next prime is 3689113. The reversal of 3689109 is 9019863.

It can be written as a sum of positive squares in only one way, i.e., 2490084 + 1199025 = 1578^2 + 1095^2 .

It is not a de Polignac number, because 3689109 - 2⁷ = 3688981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204942 + ... + 204959.

It is an arithmetic number, because the mean of its divisors is an integer number (888121).

Almost surely, 2^3689109 is an apocalyptic number.

It is an amenable number.

3689109 is a deficient number, since it is larger than the sum of its proper divisors (1639617).

3689109 is a wasteful number, since it uses less digits than its factorization.

3689109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409907 (or 409904 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 3689109 is about 1920.7053391918. The cubic root of 3689109 is about 154.5161324154.

The spelling of 3689109 in words is "three million, six hundred eighty-nine thousand, one hundred nine".