128094979 has 16 divisors (see below), whose sum is σ = 139708800. Its totient is φ = 117040896.

The previous prime is 128094973. The next prime is 128094997. The reversal of 128094979 is 979490821.

It is a cyclic number.

It is not a de Polignac number, because 128094979 - 2³ = 128094971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128094971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66867 + ... + 68755.

It is an arithmetic number, because the mean of its divisors is an integer number (8731800).

Almost surely, 2^128094979 is an apocalyptic number.

128094979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

128094979 is a deficient number, since it is larger than the sum of its proper divisors (11613821).

128094979 is a wasteful number, since it uses less digits than its factorization.

128094979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 128094979 is about 11317.9052390449. The cubic root of 128094979 is about 504.0930412655.

The spelling of 128094979 in words is "one hundred twenty-eight million, ninety-four thousand, nine hundred seventy-nine".