128479299 has 16 divisors (see below), whose sum is σ = 184800000. Its totient is φ = 78928416.

The previous prime is 128479297. The next prime is 128479331. The reversal of 128479299 is 992974821.

It is not a de Polignac number, because 128479299 - 2¹ = 128479297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128479297) 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, 23202 + ... + 28200.

It is an arithmetic number, because the mean of its divisors is an integer number (11550000).

Almost surely, 2^128479299 is an apocalyptic number.

128479299 is a deficient number, since it is larger than the sum of its proper divisors (56320701).

128479299 is a wasteful number, since it uses less digits than its factorization.

128479299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5674.

The product of its digits is 653184, while the sum is 51.

The square root of 128479299 is about 11334.8709300106. The cubic root of 128479299 is about 504.5966769550.

It can be divided in two parts, 128479 and 299, that added together give a triangular number (128778 = T₅₀₇).

The spelling of 128479299 in words is "one hundred twenty-eight million, four hundred seventy-nine thousand, two hundred ninety-nine".