3869309 has 4 divisors (see below), whose sum is σ = 3899904. Its totient is φ = 3838716.

The previous prime is 3869297. The next prime is 3869311. The reversal of 3869309 is 9039683.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9039683 = 181 ⋅49943.

It is a cyclic number.

It is not a de Polignac number, because 3869309 - 2²⁰ = 2820733 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 (3869329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15107 + ... + 15360.

It is an arithmetic number, because the mean of its divisors is an integer number (974976).

Almost surely, 2^3869309 is an apocalyptic number.

It is an amenable number.

3869309 is a deficient number, since it is larger than the sum of its proper divisors (30595).

3869309 is a wasteful number, since it uses less digits than its factorization.

3869309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30594.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 3869309 is about 1967.0559219300. The cubic root of 3869309 is about 156.9921020545.

The spelling of 3869309 in words is "three million, eight hundred sixty-nine thousand, three hundred nine".