3081949 has 4 divisors (see below), whose sum is σ = 3319036. Its totient is φ = 2844864.

The previous prime is 3081943. The next prime is 3081959. The reversal of 3081949 is 9491803.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1071225 + 2010724 = 1035^2 + 1418^2 .

It is a cyclic number.

It is not a de Polignac number, because 3081949 - 2¹³ = 3073757 is a prime.

It is a Duffinian number.

3081949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3081943) 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, 118524 + ... + 118549.

It is an arithmetic number, because the mean of its divisors is an integer number (829759).

Almost surely, 2^3081949 is an apocalyptic number.

It is an amenable number.

3081949 is a deficient number, since it is larger than the sum of its proper divisors (237087).

3081949 is a wasteful number, since it uses less digits than its factorization.

3081949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237086.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3081949 is about 1755.5480625719. The cubic root of 3081949 is about 145.5264100255.

The spelling of 3081949 in words is "three million, eighty-one thousand, nine hundred forty-nine".