2243987 has 2 divisors, whose sum is σ = 2243988. Its totient is φ = 2243986.

The previous prime is 2243959. The next prime is 2244091. The reversal of 2243987 is 7893422.

2243987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2243987 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹¹ + 2²¹ + 4⁸ + 3⁹ + 9⁵ + 8³ + 7 .

It is not a weakly prime, because it can be changed into another prime (2243287) 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, 1121993 + 1121994.

It is an arithmetic number, because the mean of its divisors is an integer number (1121994).

2^2243987 is an apocalyptic number.

2243987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243987 is an equidigital number, since it uses as much as digits as its factorization.

2243987 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 2243987 is about 1497.9943257569. The cubic root of 2243987 is about 130.9202358082.

The spelling of 2243987 in words is "two million, two hundred forty-three thousand, nine hundred eighty-seven".