3689009 has 2 divisors, whose sum is σ = 3689010. Its totient is φ = 3689008.

The previous prime is 3688991. The next prime is 3689069. The reversal of 3689009 is 9009863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3621409 + 67600 = 1903^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 3689009 - 2¹² = 3684913 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3689009.

It is not a weakly prime, because it can be changed into another prime (3689069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844504 + 1844505.

It is an arithmetic number, because the mean of its divisors is an integer number (1844505).

Almost surely, 2^3689009 is an apocalyptic number.

It is an amenable number.

3689009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3689009 is an equidigital number, since it uses as much as digits as its factorization.

3689009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 3689009 is about 1920.6793069120. The cubic root of 3689009 is about 154.5147362560.

The spelling of 3689009 in words is "three million, six hundred eighty-nine thousand, nine".