3609239 has 4 divisors (see below), whose sum is σ = 3706824. Its totient is φ = 3511656.

The previous prime is 3609211. The next prime is 3609241. The reversal of 3609239 is 9329063.

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

It is a cyclic number.

It is not a de Polignac number, because 3609239 - 2¹² = 3605143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3609209) 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, 48737 + ... + 48810.

It is an arithmetic number, because the mean of its divisors is an integer number (926706).

Almost surely, 2^3609239 is an apocalyptic number.

3609239 is a deficient number, since it is larger than the sum of its proper divisors (97585).

3609239 is an equidigital number, since it uses as much as digits as its factorization.

3609239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97584.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 3609239 is about 1899.7997262870. The cubic root of 3609239 is about 153.3928843462.

The spelling of 3609239 in words is "three million, six hundred nine thousand, two hundred thirty-nine".