8396457731 has 2 divisors, whose sum is σ = 8396457732. Its totient is φ = 8396457730.

The previous prime is 8396457673. The next prime is 8396457749. The reversal of 8396457731 is 1377546938.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8396457731 is a prime.

It is a super-2 number, since 2×8396457731² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8396457031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4198228865 + 4198228866.

It is an arithmetic number, because the mean of its divisors is an integer number (4198228866).

Almost surely, 2^8396457731 is an apocalyptic number.

8396457731 is a deficient number, since it is larger than the sum of its proper divisors (1).

8396457731 is an equidigital number, since it uses as much as digits as its factorization.

8396457731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 53.

The square root of 8396457731 is about 91632.1871996953. The cubic root of 8396457731 is about 2032.5069314462.

The spelling of 8396457731 in words is "eight billion, three hundred ninety-six million, four hundred fifty-seven thousand, seven hundred thirty-one".