542864989 has 2 divisors, whose sum is σ = 542864990. Its totient is φ = 542864988.

The previous prime is 542864983. The next prime is 542865013. The reversal of 542864989 is 989468245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484220025 + 58644964 = 22005^2 + 7658^2 .

It is a cyclic number.

It is not a de Polignac number, because 542864989 - 2⁵ = 542864957 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 (542864983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271432494 + 271432495.

It is an arithmetic number, because the mean of its divisors is an integer number (271432495).

Almost surely, 2^542864989 is an apocalyptic number.

It is an amenable number.

542864989 is a deficient number, since it is larger than the sum of its proper divisors (1).

542864989 is an equidigital number, since it uses as much as digits as its factorization.

542864989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 55.

The square root of 542864989 is about 23299.4632770800. The cubic root of 542864989 is about 815.7628893651.

The spelling of 542864989 in words is "five hundred forty-two million, eight hundred sixty-four thousand, nine hundred eighty-nine".