8309993459 has 2 divisors, whose sum is σ = 8309993460. Its totient is φ = 8309993458.

The previous prime is 8309993453. The next prime is 8309993477. The reversal of 8309993459 is 9543999038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8309993459 - 2⁴ = 8309993443 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 8309993398 and 8309993407.

It is not a weakly prime, because it can be changed into another prime (8309993453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4154996729 + 4154996730.

It is an arithmetic number, because the mean of its divisors is an integer number (4154996730).

Almost surely, 2^8309993459 is an apocalyptic number.

8309993459 is a deficient number, since it is larger than the sum of its proper divisors (1).

8309993459 is an equidigital number, since it uses as much as digits as its factorization.

8309993459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9447840, while the sum is 59.

The square root of 8309993459 is about 91159.1655238243. The cubic root of 8309993459 is about 2025.5061242849.

The spelling of 8309993459 in words is "eight billion, three hundred nine million, nine hundred ninety-three thousand, four hundred fifty-nine".