538334989 has 2 divisors, whose sum is σ = 538334990. Its totient is φ = 538334988.

The previous prime is 538334981. The next prime is 538335013. The reversal of 538334989 is 989433835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513384964 + 24950025 = 22658^2 + 4995^2 .

It is a cyclic number.

It is not a de Polignac number, because 538334989 - 2³ = 538334981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538334981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269167494 + 269167495.

It is an arithmetic number, because the mean of its divisors is an integer number (269167495).

Almost surely, 2^538334989 is an apocalyptic number.

It is an amenable number.

538334989 is a deficient number, since it is larger than the sum of its proper divisors (1).

538334989 is an equidigital number, since it uses as much as digits as its factorization.

538334989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The square root of 538334989 is about 23202.0470864103. The cubic root of 538334989 is about 813.4874723355.

The spelling of 538334989 in words is "five hundred thirty-eight million, three hundred thirty-four thousand, nine hundred eighty-nine".