8307240091 has 2 divisors, whose sum is σ = 8307240092. Its totient is φ = 8307240090.

The previous prime is 8307240089. The next prime is 8307240131. The reversal of 8307240091 is 1900427038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8307240091 - 2¹ = 8307240089 is a prime.

Together with 8307240089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8307240191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4153620045 + 4153620046.

It is an arithmetic number, because the mean of its divisors is an integer number (4153620046).

Almost surely, 2^8307240091 is an apocalyptic number.

8307240091 is a deficient number, since it is larger than the sum of its proper divisors (1).

8307240091 is an equidigital number, since it uses as much as digits as its factorization.

8307240091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 8307240091 is about 91144.0622915174. The cubic root of 8307240091 is about 2025.2823944737.

The spelling of 8307240091 in words is "eight billion, three hundred seven million, two hundred forty thousand, ninety-one".