128093879 has 2 divisors, whose sum is σ = 128093880. Its totient is φ = 128093878.

The previous prime is 128093821. The next prime is 128093939. The reversal of 128093879 is 978390821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128093879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128093809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64046939 + 64046940.

It is an arithmetic number, because the mean of its divisors is an integer number (64046940).

Almost surely, 2^128093879 is an apocalyptic number.

128093879 is a deficient number, since it is larger than the sum of its proper divisors (1).

128093879 is an equidigital number, since it uses as much as digits as its factorization.

128093879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 128093879 is about 11317.8566433755. The cubic root of 128093879 is about 504.0915983156.

It can be divided in two parts, 1280 and 93879, that added together give a palindrome (95159).

The spelling of 128093879 in words is "one hundred twenty-eight million, ninety-three thousand, eight hundred seventy-nine".