2243903 has 4 divisors (see below), whose sum is σ = 2341488. Its totient is φ = 2146320.

The previous prime is 2243893. The next prime is 2243909. The reversal of 2243903 is 3093422.

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 2243903 - 2⁴ = 2243887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 97561 = 2243903 / (2 + 2 + 4 + 3 + 9 + 0 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243909) 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, 48758 + ... + 48803.

It is an arithmetic number, because the mean of its divisors is an integer number (585372).

2^2243903 is an apocalyptic number.

2243903 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2243903 is a deficient number, since it is larger than the sum of its proper divisors (97585).

2243903 is an equidigital number, since it uses as much as digits as its factorization.

2243903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97584.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 2243903 is about 1497.9662880052. The cubic root of 2243903 is about 130.9186021925.

The spelling of 2243903 in words is "two million, two hundred forty-three thousand, nine hundred three".