128949100439 has 2 divisors, whose sum is σ = 128949100440. Its totient is φ = 128949100438.

The previous prime is 128949100411. The next prime is 128949100453. The reversal of 128949100439 is 934001949821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128949100439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128949100499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64474550219 + 64474550220.

It is an arithmetic number, because the mean of its divisors is an integer number (64474550220).

Almost surely, 2^128949100439 is an apocalyptic number.

128949100439 is a deficient number, since it is larger than the sum of its proper divisors (1).

128949100439 is an equidigital number, since it uses as much as digits as its factorization.

128949100439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 128949100439 in words is "one hundred twenty-eight billion, nine hundred forty-nine million, one hundred thousand, four hundred thirty-nine".