3109439 has 4 divisors (see below), whose sum is σ = 3244656. Its totient is φ = 2974224.

The previous prime is 3109427. The next prime is 3109441. The reversal of 3109439 is 9349013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9349013 = 857 ⋅10909.

It is a cyclic number.

It is not a de Polignac number, because 3109439 - 2¹² = 3105343 is a prime.

It is a super-2 number, since 2×3109439² = 19337221789442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102439) 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, 67574 + ... + 67619.

It is an arithmetic number, because the mean of its divisors is an integer number (811164).

Almost surely, 2^3109439 is an apocalyptic number.

3109439 is a deficient number, since it is larger than the sum of its proper divisors (135217).

3109439 is a wasteful number, since it uses less digits than its factorization.

3109439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135216.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 3109439 is about 1763.3601447237. The cubic root of 3109439 is about 145.9578129190.

The spelling of 3109439 in words is "three million, one hundred nine thousand, four hundred thirty-nine".