128885579 has 2 divisors, whose sum is σ = 128885580. Its totient is φ = 128885578.

The previous prime is 128885573. The next prime is 128885611. The reversal of 128885579 is 975588821.

It is a weak prime.

It is an emirp because it is prime and its reverse (975588821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128885579 - 2⁴ = 128885563 is a prime.

It is a super-2 number, since 2×128885579² = 33222984948330482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128885579.

It is not a weakly prime, because it can be changed into another prime (128885573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64442789 + 64442790.

It is an arithmetic number, because the mean of its divisors is an integer number (64442790).

Almost surely, 2^128885579 is an apocalyptic number.

128885579 is a deficient number, since it is larger than the sum of its proper divisors (1).

128885579 is an equidigital number, since it uses as much as digits as its factorization.

128885579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 53.

The square root of 128885579 is about 11352.7784704891. The cubic root of 128885579 is about 505.1279994463.

The spelling of 128885579 in words is "one hundred twenty-eight million, eight hundred eighty-five thousand, five hundred seventy-nine".