82986439 has 2 divisors, whose sum is σ = 82986440. Its totient is φ = 82986438.

The previous prime is 82986427. The next prime is 82986457. The reversal of 82986439 is 93468928.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82986439 - 2¹⁹ = 82462151 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 82986392 and 82986401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82986539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41493219 + 41493220.

It is an arithmetic number, because the mean of its divisors is an integer number (41493220).

Almost surely, 2^82986439 is an apocalyptic number.

82986439 is a deficient number, since it is larger than the sum of its proper divisors (1).

82986439 is an equidigital number, since it uses as much as digits as its factorization.

82986439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 82986439 is about 9109.6892921768. The cubic root of 82986439 is about 436.1833092088.

The spelling of 82986439 in words is "eighty-two million, nine hundred eighty-six thousand, four hundred thirty-nine".