128496079 has 4 divisors (see below), whose sum is σ = 131968984. Its totient is φ = 125023176.

The previous prime is 128496059. The next prime is 128496089. The reversal of 128496079 is 970694821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970694821 = 811 ⋅1196911.

It is a cyclic number.

It is not a de Polignac number, because 128496079 - 2¹⁵ = 128463311 is a prime.

It is a super-2 number, since 2×128496079² = 33022484636748482, 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 (128496059) 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, 1736397 + ... + 1736470.

It is an arithmetic number, because the mean of its divisors is an integer number (32992246).

Almost surely, 2^128496079 is an apocalyptic number.

128496079 is a deficient number, since it is larger than the sum of its proper divisors (3472905).

128496079 is an equidigital number, since it uses as much as digits as its factorization.

128496079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472904.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 128496079 is about 11335.6110995394. The cubic root of 128496079 is about 504.6186435642.

The spelling of 128496079 in words is "one hundred twenty-eight million, four hundred ninety-six thousand, seventy-nine".