816293339 has 2 divisors, whose sum is σ = 816293340. Its totient is φ = 816293338.

The previous prime is 816293323. The next prime is 816293393. The reversal of 816293339 is 933392618.

Together with next prime (816293393) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816293339 - 2⁴ = 816293323 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 816293339.

It is not a weakly prime, because it can be changed into another prime (816293939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408146669 + 408146670.

It is an arithmetic number, because the mean of its divisors is an integer number (408146670).

Almost surely, 2^816293339 is an apocalyptic number.

816293339 is a deficient number, since it is larger than the sum of its proper divisors (1).

816293339 is an equidigital number, since it uses as much as digits as its factorization.

816293339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 816293339 is about 28570.8477123098. The cubic root of 816293339 is about 934.5777074387.

The spelling of 816293339 in words is "eight hundred sixteen million, two hundred ninety-three thousand, three hundred thirty-nine".