128232799 has 2 divisors, whose sum is σ = 128232800. Its totient is φ = 128232798.

The previous prime is 128232791. The next prime is 128232803. The reversal of 128232799 is 997232821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128232799 - 2³ = 128232791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128232791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64116399 + 64116400.

It is an arithmetic number, because the mean of its divisors is an integer number (64116400).

Almost surely, 2^128232799 is an apocalyptic number.

128232799 is a deficient number, since it is larger than the sum of its proper divisors (1).

128232799 is an equidigital number, since it uses as much as digits as its factorization.

128232799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 128232799 is about 11323.9921847377. The cubic root of 128232799 is about 504.2737644606.

The spelling of 128232799 in words is "one hundred twenty-eight million, two hundred thirty-two thousand, seven hundred ninety-nine".