128849079 has 16 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 84002880.

The previous prime is 128849057. The next prime is 128849087. The reversal of 128849079 is 970948821.

It is not a de Polignac number, because 128849079 - 2⁵ = 128849047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128849099) 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, 22819 + ... + 27899.

It is an arithmetic number, because the mean of its divisors is an integer number (10977120).

Almost surely, 2^128849079 is an apocalyptic number.

128849079 is a deficient number, since it is larger than the sum of its proper divisors (46784841).

128849079 is a wasteful number, since it uses less digits than its factorization.

128849079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 128849079 is about 11351.1708206687. The cubic root of 128849079 is about 505.0803113784.

The spelling of 128849079 in words is "one hundred twenty-eight million, eight hundred forty-nine thousand, seventy-nine".