82859939 has 2 divisors, whose sum is σ = 82859940. Its totient is φ = 82859938.

The previous prime is 82859927. The next prime is 82859941. The reversal of 82859939 is 93995828.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82859939 - 2⁴ = 82859923 is a prime.

Together with 82859941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82859039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41429969 + 41429970.

It is an arithmetic number, because the mean of its divisors is an integer number (41429970).

Almost surely, 2^82859939 is an apocalyptic number.

82859939 is a deficient number, since it is larger than the sum of its proper divisors (1).

82859939 is an equidigital number, since it uses as much as digits as its factorization.

82859939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 53.

The square root of 82859939 is about 9102.7434875426. The cubic root of 82859939 is about 435.9615651527.

The spelling of 82859939 in words is "eighty-two million, eight hundred fifty-nine thousand, nine hundred thirty-nine".