128959711 has 2 divisors, whose sum is σ = 128959712. Its totient is φ = 128959710.

The previous prime is 128959703. The next prime is 128959751. The reversal of 128959711 is 117959821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128959711 - 2³ = 128959703 is a prime.

It is a super-2 number, since 2×128959711² = 33261214122407042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128959751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64479855 + 64479856.

It is an arithmetic number, because the mean of its divisors is an integer number (64479856).

Almost surely, 2^128959711 is an apocalyptic number.

128959711 is a deficient number, since it is larger than the sum of its proper divisors (1).

128959711 is an equidigital number, since it uses as much as digits as its factorization.

128959711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 43.

The square root of 128959711 is about 11356.0429287670. The cubic root of 128959711 is about 505.2248268598.

The spelling of 128959711 in words is "one hundred twenty-eight million, nine hundred fifty-nine thousand, seven hundred eleven".