3081839 has 4 divisors (see below), whose sum is σ = 3215856. Its totient is φ = 2947824.

The previous prime is 3081833. The next prime is 3081851. The reversal of 3081839 is 9381803.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9381803 = 79 ⋅118757.

It is a cyclic number.

It is not a de Polignac number, because 3081839 - 2⁴ = 3081823 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 (3081833) 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, 66974 + ... + 67019.

It is an arithmetic number, because the mean of its divisors is an integer number (803964).

Almost surely, 2^3081839 is an apocalyptic number.

3081839 is a deficient number, since it is larger than the sum of its proper divisors (134017).

3081839 is a wasteful number, since it uses less digits than its factorization.

3081839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134016.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 3081839 is about 1755.5167330447. The cubic root of 3081839 is about 145.5246786432.

The spelling of 3081839 in words is "three million, eighty-one thousand, eight hundred thirty-nine".