85384794029 has 2 divisors, whose sum is σ = 85384794030. Its totient is φ = 85384794028.

The previous prime is 85384793941. The next prime is 85384794059. The reversal of 85384794029 is 92049748358.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63688093225 + 21696700804 = 252365^2 + 147298^2 .

It is a cyclic number.

It is not a de Polignac number, because 85384794029 - 2²⁸ = 85116358573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85384794059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42692397014 + 42692397015.

It is an arithmetic number, because the mean of its divisors is an integer number (42692397015).

Almost surely, 2^85384794029 is an apocalyptic number.

It is an amenable number.

85384794029 is a deficient number, since it is larger than the sum of its proper divisors (1).

85384794029 is an equidigital number, since it uses as much as digits as its factorization.

85384794029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 85384794029 in words is "eighty-five billion, three hundred eighty-four million, seven hundred ninety-four thousand, twenty-nine".