2243789 has 2 divisors, whose sum is σ = 2243790. Its totient is φ = 2243788.

The previous prime is 2243777. The next prime is 2243797. The reversal of 2243789 is 9873422.

2243789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 779689 = 1210^2 + 883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2243789 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2¹³ + 2²¹ + 4⁵ + 3⁹ + 7⁶ + 8 + 9² .

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2243089) 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 as a sum of consecutive naturals, namely, 1121894 + 1121895.

It is an arithmetic number, because the mean of its divisors is an integer number (1121895).

2^2243789 is an apocalyptic number.

It is an amenable number.

2243789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243789 is an equidigital number, since it uses as much as digits as its factorization.

2243789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 2243789 is about 1497.9282359312. The cubic root of 2243789 is about 130.9163850775.

It can be divided in two parts, 2 and 243789, that multiplied together give a triangular number (487578 = T₉₈₇).

The spelling of 2243789 in words is "two million, two hundred forty-three thousand, seven hundred eighty-nine".