853128929 has 2 divisors, whose sum is σ = 853128930. Its totient is φ = 853128928.

The previous prime is 853128923. The next prime is 853128953. The reversal of 853128929 is 929821358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 493950625 + 359178304 = 22225^2 + 18952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-853128929 is a prime.

It is not a weakly prime, because it can be changed into another prime (853128923) 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, 426564464 + 426564465.

It is an arithmetic number, because the mean of its divisors is an integer number (426564465).

Almost surely, 2^853128929 is an apocalyptic number.

It is an amenable number.

853128929 is a deficient number, since it is larger than the sum of its proper divisors (1).

853128929 is an equidigital number, since it uses as much as digits as its factorization.

853128929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 853128929 is about 29208.3708720634. The cubic root of 853128929 is about 948.4291413574.

The spelling of 853128929 in words is "eight hundred fifty-three million, one hundred twenty-eight thousand, nine hundred twenty-nine".