135230989 has 2 divisors, whose sum is σ = 135230990. Its totient is φ = 135230988.

The previous prime is 135230983. The next prime is 135231011. The reversal of 135230989 is 989032531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 17682025 = 10842^2 + 4205^2 .

It is a cyclic number.

It is not a de Polignac number, because 135230989 - 2⁹ = 135230477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135230983) 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, 67615494 + 67615495.

It is an arithmetic number, because the mean of its divisors is an integer number (67615495).

Almost surely, 2^135230989 is an apocalyptic number.

It is an amenable number.

135230989 is a deficient number, since it is larger than the sum of its proper divisors (1).

135230989 is an equidigital number, since it uses as much as digits as its factorization.

135230989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 135230989 is about 11628.8859741593. The cubic root of 135230989 is about 513.2851992404.

The spelling of 135230989 in words is "one hundred thirty-five million, two hundred thirty thousand, nine hundred eighty-nine".