981443 has 2 divisors, whose sum is σ = 981444. Its totient is φ = 981442.

The previous prime is 981439. The next prime is 981451. The reversal of 981443 is 344189.

It is a weak prime.

It is an emirp because it is prime and its reverse (344189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981443 - 2² = 981439 is a prime.

It is not a weakly prime, because it can be changed into another prime (981473) 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 as a sum of consecutive naturals, namely, 490721 + 490722.

It is an arithmetic number, because the mean of its divisors is an integer number (490722).

2⁹⁸¹⁴⁴³ is an apocalyptic number.

981443 is a deficient number, since it is larger than the sum of its proper divisors (1).

981443 is an equidigital number, since it uses as much as digits as its factorization.

981443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 981443 is about 990.6780506300. The cubic root of 981443 is about 99.3775671449.

The spelling of 981443 in words is "nine hundred eighty-one thousand, four hundred forty-three".