3609439 has 2 divisors, whose sum is σ = 3609440. Its totient is φ = 3609438.

The previous prime is 3609433. The next prime is 3609451. The reversal of 3609439 is 9349063.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3609439 - 2⁵ = 3609407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3609433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804719 + 1804720.

It is an arithmetic number, because the mean of its divisors is an integer number (1804720).

Almost surely, 2^3609439 is an apocalyptic number.

3609439 is a deficient number, since it is larger than the sum of its proper divisors (1).

3609439 is an equidigital number, since it uses as much as digits as its factorization.

3609439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3609439 is about 1899.8523626851. The cubic root of 3609439 is about 153.3957176314.

The spelling of 3609439 in words is "three million, six hundred nine thousand, four hundred thirty-nine".