8210086393 has 4 divisors (see below), whose sum is σ = 8211389940. Its totient is φ = 8208782848.

The previous prime is 8210086373. The next prime is 8210086397. The reversal of 8210086393 is 3936800128.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4859065849 + 3351020544 = 69707^2 + 57888^2 .

It is a cyclic number.

It is not a de Polignac number, because 8210086393 - 2²¹ = 8207989241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8210086397) 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 in 3 ways as a sum of consecutive naturals, for example, 642280 + ... + 654937.

It is an arithmetic number, because the mean of its divisors is an integer number (2052847485).

Almost surely, 2^8210086393 is an apocalyptic number.

It is an amenable number.

8210086393 is a deficient number, since it is larger than the sum of its proper divisors (1303547).

8210086393 is a wasteful number, since it uses less digits than its factorization.

8210086393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303546.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 8210086393 is about 90609.5270542783. The cubic root of 8210086393 is about 2017.3561458267.

The spelling of 8210086393 in words is "eight billion, two hundred ten million, eighty-six thousand, three hundred ninety-three".