128833897 has 2 divisors, whose sum is σ = 128833898. Its totient is φ = 128833896.

The previous prime is 128833877. The next prime is 128833907. The reversal of 128833897 is 798338821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91183401 + 37650496 = 9549^2 + 6136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128833897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128833897.

It is not a weakly prime, because it can be changed into another prime (128833807) 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, 64416948 + 64416949.

It is an arithmetic number, because the mean of its divisors is an integer number (64416949).

Almost surely, 2^128833897 is an apocalyptic number.

It is an amenable number.

128833897 is a deficient number, since it is larger than the sum of its proper divisors (1).

128833897 is an equidigital number, since it uses as much as digits as its factorization.

128833897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 128833897 is about 11350.5020593805. The cubic root of 128833897 is about 505.0604731032.

The spelling of 128833897 in words is "one hundred twenty-eight million, eight hundred thirty-three thousand, eight hundred ninety-seven".