543949589 has 2 divisors, whose sum is σ = 543949590. Its totient is φ = 543949588.

The previous prime is 543949507. The next prime is 543949619. The reversal of 543949589 is 985949345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 512252689 + 31696900 = 22633^2 + 5630^2 .

It is a cyclic number.

It is not a de Polignac number, because 543949589 - 2²⁰ = 542901013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543949789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271974794 + 271974795.

It is an arithmetic number, because the mean of its divisors is an integer number (271974795).

Almost surely, 2^543949589 is an apocalyptic number.

It is an amenable number.

543949589 is a deficient number, since it is larger than the sum of its proper divisors (1).

543949589 is an equidigital number, since it uses as much as digits as its factorization.

543949589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 56.

The square root of 543949589 is about 23322.7268774472. The cubic root of 543949589 is about 816.3058038796.

The spelling of 543949589 in words is "five hundred forty-three million, nine hundred forty-nine thousand, five hundred eighty-nine".