2239871 has 4 divisors (see below), whose sum is σ = 2294544. Its totient is φ = 2185200.

The previous prime is 2239847. The next prime is 2239883. The reversal of 2239871 is 1789322.

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

It is a cyclic number.

It is not a de Polignac number, because 2239871 - 2⁶ = 2239807 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230871) 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, 27275 + ... + 27356.

It is an arithmetic number, because the mean of its divisors is an integer number (573636).

2^2239871 is an apocalyptic number.

2239871 is a deficient number, since it is larger than the sum of its proper divisors (54673).

2239871 is an equidigital number, since it uses as much as digits as its factorization.

2239871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54672.

The product of its digits is 6048, while the sum is 32.

The square root of 2239871 is about 1496.6198582138. The cubic root of 2239871 is about 130.8401406477.

It can be divided in two parts, 22 and 39871, that added together give a palindrome (39893).

The spelling of 2239871 in words is "two million, two hundred thirty-nine thousand, eight hundred seventy-one".