128593879 has 2 divisors, whose sum is σ = 128593880. Its totient is φ = 128593878.

The previous prime is 128593877. The next prime is 128593889. The reversal of 128593879 is 978395821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128593879 - 2¹ = 128593877 is a prime.

Together with 128593877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128593873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64296939 + 64296940.

It is an arithmetic number, because the mean of its divisors is an integer number (64296940).

Almost surely, 2^128593879 is an apocalyptic number.

128593879 is a deficient number, since it is larger than the sum of its proper divisors (1).

128593879 is an equidigital number, since it uses as much as digits as its factorization.

128593879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 52.

The square root of 128593879 is about 11339.9241179119. The cubic root of 128593879 is about 504.7466349869.

It can be divided in two parts, 12859387 and 9, that added together give a square (12859396 = 3586²).

The spelling of 128593879 in words is "one hundred twenty-eight million, five hundred ninety-three thousand, eight hundred seventy-nine".