128410489 has 2 divisors, whose sum is σ = 128410490. Its totient is φ = 128410488.

The previous prime is 128410481. The next prime is 128410501. The reversal of 128410489 is 984014821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 37112464 = 9555^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 128410489 - 2³ = 128410481 is a prime.

It is not a weakly prime, because it can be changed into another prime (128410481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64205244 + 64205245.

It is an arithmetic number, because the mean of its divisors is an integer number (64205245).

Almost surely, 2^128410489 is an apocalyptic number.

It is an amenable number.

128410489 is a deficient number, since it is larger than the sum of its proper divisors (1).

128410489 is an equidigital number, since it uses as much as digits as its factorization.

128410489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 128410489 is about 11331.8352000018. The cubic root of 128410489 is about 504.5065781400.

The spelling of 128410489 in words is "one hundred twenty-eight million, four hundred ten thousand, four hundred eighty-nine".