128093923 has 4 divisors (see below), whose sum is σ = 133663248. Its totient is φ = 122524600.

The previous prime is 128093879. The next prime is 128093939. The reversal of 128093923 is 329390821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128093923 - 2⁹ = 128093411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128093123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2784628 + ... + 2784673.

It is an arithmetic number, because the mean of its divisors is an integer number (33415812).

Almost surely, 2^128093923 is an apocalyptic number.

128093923 is a deficient number, since it is larger than the sum of its proper divisors (5569325).

128093923 is an equidigital number, since it uses as much as digits as its factorization.

128093923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569324.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 128093923 is about 11317.8585872063. The cubic root of 128093923 is about 504.0916560337.

The spelling of 128093923 in words is "one hundred twenty-eight million, ninety-three thousand, nine hundred twenty-three".