3109189 has 4 divisors (see below), whose sum is σ = 3116160. Its totient is φ = 3102220.

The previous prime is 3109187. The next prime is 3109193. The reversal of 3109189 is 9819013.

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: 9819013 = 17 ⋅577589.

It is a cyclic number.

It is not a de Polignac number, because 3109189 - 2¹ = 3109187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3109189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3109187) 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, 2767 + ... + 3724.

It is an arithmetic number, because the mean of its divisors is an integer number (779040).

Almost surely, 2^3109189 is an apocalyptic number.

It is an amenable number.

3109189 is a deficient number, since it is larger than the sum of its proper divisors (6971).

3109189 is an equidigital number, since it uses as much as digits as its factorization.

3109189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6970.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 3109189 is about 1763.2892559078. The cubic root of 3109189 is about 145.9539011275.

The spelling of 3109189 in words is "three million, one hundred nine thousand, one hundred eighty-nine".