128839033 has 2 divisors, whose sum is σ = 128839034. Its totient is φ = 128839032.

The previous prime is 128839027. The next prime is 128839043. The reversal of 128839033 is 330938821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103063104 + 25775929 = 10152^2 + 5077^2 .

It is a cyclic number.

It is not a de Polignac number, because 128839033 - 2⁵ = 128839001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128838983 and 128839001.

It is not a weakly prime, because it can be changed into another prime (128839003) 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, 64419516 + 64419517.

It is an arithmetic number, because the mean of its divisors is an integer number (64419517).

Almost surely, 2^128839033 is an apocalyptic number.

It is an amenable number.

128839033 is a deficient number, since it is larger than the sum of its proper divisors (1).

128839033 is an equidigital number, since it uses as much as digits as its factorization.

128839033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 128839033 is about 11350.7283026245. The cubic root of 128839033 is about 505.0671844739.

The spelling of 128839033 in words is "one hundred twenty-eight million, eight hundred thirty-nine thousand, thirty-three".