543425989 has 2 divisors, whose sum is σ = 543425990. Its totient is φ = 543425988.

The previous prime is 543425933. The next prime is 543426007. The reversal of 543425989 is 989524345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521756964 + 21669025 = 22842^2 + 4655^2 .

It is a cyclic number.

It is not a de Polignac number, because 543425989 - 2¹⁹ = 542901701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (543425089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271712994 + 271712995.

It is an arithmetic number, because the mean of its divisors is an integer number (271712995).

Almost surely, 2^543425989 is an apocalyptic number.

It is an amenable number.

543425989 is a deficient number, since it is larger than the sum of its proper divisors (1).

543425989 is an equidigital number, since it uses as much as digits as its factorization.

543425989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 49.

The square root of 543425989 is about 23311.4990723462. The cubic root of 543425989 is about 816.0437974097.

The spelling of 543425989 in words is "five hundred forty-three million, four hundred twenty-five thousand, nine hundred eighty-nine".