89443 has 2 divisors, whose sum is σ = 89444. Its totient is φ = 89442.

The previous prime is 89431. The next prime is 89449. The reversal of 89443 is 34498.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89443 is a prime.

It is not a weakly prime, because it can be changed into another prime (89449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44721 + 44722.

It is an arithmetic number, because the mean of its divisors is an integer number (44722).

2⁸⁹⁴⁴³ is an apocalyptic number.

89443 is a deficient number, since it is larger than the sum of its proper divisors (1).

89443 is an equidigital number, since it uses as much as digits as its factorization.

89443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 89443 is about 299.0702258668. The cubic root of 89443 is about 44.7214063666.

Subtracting from 89443 its reverse (34498), we obtain a palindrome (54945).

The spelling of 89443 in words is "eighty-nine thousand, four hundred forty-three".