543889 has 2 divisors, whose sum is σ = 543890. Its totient is φ = 543888.

The previous prime is 543887. The next prime is 543901. The reversal of 543889 is 988345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 65025 = 692^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 543889 - 2¹ = 543887 is a prime.

Together with 543887, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (543883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271944 + 271945.

It is an arithmetic number, because the mean of its divisors is an integer number (271945).

2⁵⁴³⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

543889 is a deficient number, since it is larger than the sum of its proper divisors (1).

543889 is an equidigital number, since it uses as much as digits as its factorization.

543889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 543889 is about 737.4883049920. The cubic root of 543889 is about 81.6275494092.

The spelling of 543889 in words is "five hundred forty-three thousand, eight hundred eighty-nine".