85384492493 has 2 divisors, whose sum is σ = 85384492494. Its totient is φ = 85384492492.

The previous prime is 85384492481. The next prime is 85384492507. The reversal of 85384492493 is 39429448358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70523175844 + 14861316649 = 265562^2 + 121907^2 .

It is a cyclic number.

It is not a de Polignac number, because 85384492493 - 2¹⁰ = 85384491469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85384492393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42692246246 + 42692246247.

It is an arithmetic number, because the mean of its divisors is an integer number (42692246247).

Almost surely, 2^85384492493 is an apocalyptic number.

It is an amenable number.

85384492493 is a deficient number, since it is larger than the sum of its proper divisors (1).

85384492493 is an equidigital number, since it uses as much as digits as its factorization.

85384492493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29859840, while the sum is 59.

The spelling of 85384492493 in words is "eighty-five billion, three hundred eighty-four million, four hundred ninety-two thousand, four hundred ninety-three".