8085724091 has 2 divisors, whose sum is σ = 8085724092. Its totient is φ = 8085724090.

The previous prime is 8085724063. The next prime is 8085724123. The reversal of 8085724091 is 1904275808.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8085724091 is a prime.

It is not a weakly prime, because it can be changed into another prime (8085724051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4042862045 + 4042862046.

It is an arithmetic number, because the mean of its divisors is an integer number (4042862046).

Almost surely, 2^8085724091 is an apocalyptic number.

8085724091 is a deficient number, since it is larger than the sum of its proper divisors (1).

8085724091 is an equidigital number, since it uses as much as digits as its factorization.

8085724091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 8085724091 is about 89920.6544182147. The cubic root of 8085724091 is about 2007.1183090310.

Adding to 8085724091 its reverse (1904275808), we get a palindrome (9989999899).

The spelling of 8085724091 in words is "eight billion, eighty-five million, seven hundred twenty-four thousand, ninety-one".