543918889 has 2 divisors, whose sum is σ = 543918890. Its totient is φ = 543918888.

The previous prime is 543918877. The next prime is 543918899. The reversal of 543918889 is 988819345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309584025 + 234334864 = 17595^2 + 15308^2 .

It is a cyclic number.

It is not a de Polignac number, because 543918889 - 2¹⁵ = 543886121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (543918899) 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, 271959444 + 271959445.

It is an arithmetic number, because the mean of its divisors is an integer number (271959445).

Almost surely, 2^543918889 is an apocalyptic number.

It is an amenable number.

543918889 is a deficient number, since it is larger than the sum of its proper divisors (1).

543918889 is an equidigital number, since it uses as much as digits as its factorization.

543918889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 55.

The square root of 543918889 is about 23322.0687118446. The cubic root of 543918889 is about 816.2904464150.

The spelling of 543918889 in words is "five hundred forty-three million, nine hundred eighteen thousand, eight hundred eighty-nine".