82643339 has 2 divisors, whose sum is σ = 82643340. Its totient is φ = 82643338.

The previous prime is 82643329. The next prime is 82643371. The reversal of 82643339 is 93334628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82643339 - 2²⁰ = 81594763 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (82643329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41321669 + 41321670.

It is an arithmetic number, because the mean of its divisors is an integer number (41321670).

Almost surely, 2^82643339 is an apocalyptic number.

82643339 is a deficient number, since it is larger than the sum of its proper divisors (1).

82643339 is an equidigital number, since it uses as much as digits as its factorization.

82643339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 38.

The square root of 82643339 is about 9090.8381901781. The cubic root of 82643339 is about 435.5813585986.

The spelling of 82643339 in words is "eighty-two million, six hundred forty-three thousand, three hundred thirty-nine".