128455339 has 2 divisors, whose sum is σ = 128455340. Its totient is φ = 128455338.

The previous prime is 128455309. The next prime is 128455363. The reversal of 128455339 is 933554821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128455339 - 2⁵ = 128455307 is a prime.

It is not a weakly prime, because it can be changed into another prime (128455309) 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, 64227669 + 64227670.

It is an arithmetic number, because the mean of its divisors is an integer number (64227670).

Almost surely, 2^128455339 is an apocalyptic number.

128455339 is a deficient number, since it is larger than the sum of its proper divisors (1).

128455339 is an equidigital number, since it uses as much as digits as its factorization.

128455339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 128455339 is about 11333.8139652987. The cubic root of 128455339 is about 504.5653077303.

The spelling of 128455339 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, three hundred thirty-nine".