249443 has 4 divisors (see below), whose sum is σ = 255288. Its totient is φ = 243600.

The previous prime is 249439. The next prime is 249449. The reversal of 249443 is 344942.

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 249443 - 2² = 249439 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249443.

It is not an unprimeable number, because it can be changed into a prime (249449) 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 in 3 ways as a sum of consecutive naturals, for example, 2858 + ... + 2943.

It is an arithmetic number, because the mean of its divisors is an integer number (63822).

2²⁴⁹⁴⁴³ is an apocalyptic number.

249443 is a deficient number, since it is larger than the sum of its proper divisors (5845).

249443 is an equidigital number, since it uses as much as digits as its factorization.

249443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844.

The product of its digits is 3456, while the sum is 26.

The square root of 249443 is about 499.4426894049. The cubic root of 249443 is about 62.9492326376.

The spelling of 249443 in words is "two hundred forty-nine thousand, four hundred forty-three".