573438989 has 2 divisors, whose sum is σ = 573438990. Its totient is φ = 573438988.

The previous prime is 573438973. The next prime is 573438991. The reversal of 573438989 is 989834375.

573438989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 572022889 + 1416100 = 23917^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 573438989 - 2⁴ = 573438973 is a prime.

Together with 573438991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (573438919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286719494 + 286719495.

It is an arithmetic number, because the mean of its divisors is an integer number (286719495).

Almost surely, 2^573438989 is an apocalyptic number.

It is an amenable number.

573438989 is a deficient number, since it is larger than the sum of its proper divisors (1).

573438989 is an equidigital number, since it uses as much as digits as its factorization.

573438989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 573438989 is about 23946.5861658818. The cubic root of 573438989 is about 830.7985680508.

The spelling of 573438989 in words is "five hundred seventy-three million, four hundred thirty-eight thousand, nine hundred eighty-nine".