128585959 has 2 divisors, whose sum is σ = 128585960. Its totient is φ = 128585958.

The previous prime is 128585929. The next prime is 128585993. The reversal of 128585959 is 959585821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128585959 - 2⁵ = 128585927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128585929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64292979 + 64292980.

It is an arithmetic number, because the mean of its divisors is an integer number (64292980).

Almost surely, 2^128585959 is an apocalyptic number.

128585959 is a deficient number, since it is larger than the sum of its proper divisors (1).

128585959 is an equidigital number, since it uses as much as digits as its factorization.

128585959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 52.

The square root of 128585959 is about 11339.5749038489. The cubic root of 128585959 is about 504.7362724527.

The spelling of 128585959 in words is "one hundred twenty-eight million, five hundred eighty-five thousand, nine hundred fifty-nine".