8394533129 has 2 divisors, whose sum is σ = 8394533130. Its totient is φ = 8394533128.

The previous prime is 8394533011. The next prime is 8394533153. The reversal of 8394533129 is 9213354938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7360782025 + 1033751104 = 85795^2 + 32152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8394533129 is a prime.

It is not a weakly prime, because it can be changed into another prime (8394533159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4197266564 + 4197266565.

It is an arithmetic number, because the mean of its divisors is an integer number (4197266565).

Almost surely, 2^8394533129 is an apocalyptic number.

It is an amenable number.

8394533129 is a deficient number, since it is larger than the sum of its proper divisors (1).

8394533129 is an equidigital number, since it uses as much as digits as its factorization.

8394533129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 8394533129 is about 91621.6848186061. The cubic root of 8394533129 is about 2032.3516252465.

The spelling of 8394533129 in words is "eight billion, three hundred ninety-four million, five hundred thirty-three thousand, one hundred twenty-nine".