3889309 has 4 divisors (see below), whose sum is σ = 3944160. Its totient is φ = 3834460.

The previous prime is 3889289. The next prime is 3889313. The reversal of 3889309 is 9039883.

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: 9039883 = 1277 ⋅7079.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3889309 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889349) 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, 27319 + ... + 27460.

It is an arithmetic number, because the mean of its divisors is an integer number (986040).

Almost surely, 2^3889309 is an apocalyptic number.

It is an amenable number.

3889309 is a deficient number, since it is larger than the sum of its proper divisors (54851).

3889309 is an equidigital number, since it uses as much as digits as its factorization.

3889309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54850.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 3889309 is about 1972.1331090979. The cubic root of 3889309 is about 157.2621285371.

The spelling of 3889309 in words is "three million, eight hundred eighty-nine thousand, three hundred nine".