128407339 has 16 divisors (see below), whose sum is σ = 137646880. Its totient is φ = 119771136.

The previous prime is 128407327. The next prime is 128407361. The reversal of 128407339 is 933704821.

It is not a de Polignac number, because 128407339 - 2⁹ = 128406827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128407298 and 128407307.

It is not an unprimeable number, because it can be changed into a prime (128407439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665227 + ... + 665419.

It is an arithmetic number, because the mean of its divisors is an integer number (8602930).

Almost surely, 2^128407339 is an apocalyptic number.

128407339 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

128407339 is a deficient number, since it is larger than the sum of its proper divisors (9239541).

128407339 is an frugal number, since it uses more digits than its factorization.

128407339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 128407339 is about 11331.6962101885. The cubic root of 128407339 is about 504.5024528054.

The spelling of 128407339 in words is "one hundred twenty-eight million, four hundred seven thousand, three hundred thirty-nine".