68116439 has 2 divisors, whose sum is σ = 68116440. Its totient is φ = 68116438.

The previous prime is 68116427. The next prime is 68116441. The reversal of 68116439 is 93461186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68116439 - 2⁴ = 68116423 is a prime.

Together with 68116441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68116469) 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, 34058219 + 34058220.

It is an arithmetic number, because the mean of its divisors is an integer number (34058220).

Almost surely, 2^68116439 is an apocalyptic number.

68116439 is a deficient number, since it is larger than the sum of its proper divisors (1).

68116439 is an equidigital number, since it uses as much as digits as its factorization.

68116439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 68116439 is about 8253.2683828893. The cubic root of 68116439 is about 408.3983498120.

The spelling of 68116439 in words is "sixty-eight million, one hundred sixteen thousand, four hundred thirty-nine".