128088329 has 4 divisors (see below), whose sum is σ = 134829840. Its totient is φ = 121346820.

The previous prime is 128088299. The next prime is 128088341. The reversal of 128088329 is 923880821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 923880821 = 491 ⋅1881631.

It is a cyclic number.

It is not a de Polignac number, because 128088329 - 2⁸ = 128088073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128088629) 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 in 3 ways as a sum of consecutive naturals, for example, 3370727 + ... + 3370764.

It is an arithmetic number, because the mean of its divisors is an integer number (33707460).

Almost surely, 2^128088329 is an apocalyptic number.

128088329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

128088329 is a deficient number, since it is larger than the sum of its proper divisors (6741511).

128088329 is an equidigital number, since it uses as much as digits as its factorization.

128088329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741510.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 128088329 is about 11317.6114529524. The cubic root of 128088329 is about 504.0843178512.

The spelling of 128088329 in words is "one hundred twenty-eight million, eighty-eight thousand, three hundred twenty-nine".