2243139 has 4 divisors (see below), whose sum is σ = 2990856. Its totient is φ = 1495424.

The previous prime is 2243123. The next prime is 2243161. The reversal of 2243139 is 9313422.

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 2243139 - 2⁴ = 2243123 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2241139) 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, 373854 + ... + 373859.

It is an arithmetic number, because the mean of its divisors is an integer number (747714).

2^2243139 is an apocalyptic number.

2243139 is a deficient number, since it is larger than the sum of its proper divisors (747717).

2243139 is an equidigital number, since it uses as much as digits as its factorization.

2243139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747716.

The product of its digits is 1296, while the sum is 24.

The square root of 2243139 is about 1497.7112538804. The cubic root of 2243139 is about 130.9037421969.

The spelling of 2243139 in words is "two million, two hundred forty-three thousand, one hundred thirty-nine".