82920839 has 2 divisors, whose sum is σ = 82920840. Its totient is φ = 82920838.

The previous prime is 82920833. The next prime is 82920841. The reversal of 82920839 is 93802928.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82920839 - 2⁴ = 82920823 is a prime.

Together with 82920841, 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 = 82920796 and 82920805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82920833) 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, 41460419 + 41460420.

It is an arithmetic number, because the mean of its divisors is an integer number (41460420).

Almost surely, 2^82920839 is an apocalyptic number.

82920839 is a deficient number, since it is larger than the sum of its proper divisors (1).

82920839 is an equidigital number, since it uses as much as digits as its factorization.

82920839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 82920839 is about 9106.0880184633. The cubic root of 82920839 is about 436.0683459757.

The spelling of 82920839 in words is "eighty-two million, nine hundred twenty thousand, eight hundred thirty-nine".