128895079 has 4 divisors (see below), whose sum is σ = 128932776. Its totient is φ = 128857384.

The previous prime is 128895049. The next prime is 128895097. The reversal of 128895079 is 970598821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970598821 = 241 ⋅4027381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128895079 is a prime.

It is a super-2 number, since 2×128895079² = 33227882780832482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128895029) 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, 13144 + ... + 20749.

It is an arithmetic number, because the mean of its divisors is an integer number (32233194).

Almost surely, 2^128895079 is an apocalyptic number.

128895079 is a deficient number, since it is larger than the sum of its proper divisors (37697).

128895079 is an equidigital number, since it uses as much as digits as its factorization.

128895079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37696.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 128895079 is about 11353.1968625581. The cubic root of 128895079 is about 505.1404099325.

The spelling of 128895079 in words is "one hundred twenty-eight million, eight hundred ninety-five thousand, seventy-nine".