82018439 has 2 divisors, whose sum is σ = 82018440. Its totient is φ = 82018438.

The previous prime is 82018399. The next prime is 82018441. The reversal of 82018439 is 93481028.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82018439 is a prime.

Together with 82018441, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 82018399 and 82018408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82018499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41009219 + 41009220.

It is an arithmetic number, because the mean of its divisors is an integer number (41009220).

Almost surely, 2^82018439 is an apocalyptic number.

82018439 is a deficient number, since it is larger than the sum of its proper divisors (1).

82018439 is an equidigital number, since it uses as much as digits as its factorization.

82018439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 82018439 is about 9056.4032043632. The cubic root of 82018439 is about 434.4807103209.

The spelling of 82018439 in words is "eighty-two million, eighteen thousand, four hundred thirty-nine".