768209339 has 2 divisors, whose sum is σ = 768209340. Its totient is φ = 768209338.

The previous prime is 768209303. The next prime is 768209353. The reversal of 768209339 is 933902867.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768209339 is a prime.

It is a Chen prime.

It is equal to p_39593279 and since 768209339 and 39593279 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 768209293 and 768209302.

It is not a weakly prime, because it can be changed into another prime (768209399) 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, 384104669 + 384104670.

It is an arithmetic number, because the mean of its divisors is an integer number (384104670).

Almost surely, 2^768209339 is an apocalyptic number.

768209339 is a deficient number, since it is larger than the sum of its proper divisors (1).

768209339 is an equidigital number, since it uses as much as digits as its factorization.

768209339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 768209339 is about 27716.5895990109. The cubic root of 768209339 is about 915.8545925028.

The spelling of 768209339 in words is "seven hundred sixty-eight million, two hundred nine thousand, three hundred thirty-nine".