2591849 has 4 divisors (see below), whose sum is σ = 2791236. Its totient is φ = 2392464.

The previous prime is 2591843. The next prime is 2591851. The reversal of 2591849 is 9481952.

2591849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 883600 + 1708249 = 940^2 + 1307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2591849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2591843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99674 + ... + 99699.

It is an arithmetic number, because the mean of its divisors is an integer number (697809).

2^2591849 is an apocalyptic number.

It is an amenable number.

2591849 is a deficient number, since it is larger than the sum of its proper divisors (199387).

2591849 is a wasteful number, since it uses less digits than its factorization.

2591849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199386.

The product of its digits is 25920, while the sum is 38.

The square root of 2591849 is about 1609.9220478023. The cubic root of 2591849 is about 137.3630415878.

The spelling of 2591849 in words is "two million, five hundred ninety-one thousand, eight hundred forty-nine".