82839389 has 2 divisors, whose sum is σ = 82839390. Its totient is φ = 82839388.

The previous prime is 82839377. The next prime is 82839397. The reversal of 82839389 is 98393828.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57002500 + 25836889 = 7550^2 + 5083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82839389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82839349) 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, 41419694 + 41419695.

It is an arithmetic number, because the mean of its divisors is an integer number (41419695).

Almost surely, 2^82839389 is an apocalyptic number.

It is an amenable number.

82839389 is a deficient number, since it is larger than the sum of its proper divisors (1).

82839389 is an equidigital number, since it uses as much as digits as its factorization.

82839389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 82839389 is about 9101.6146369751. The cubic root of 82839389 is about 435.9255213942.

The spelling of 82839389 in words is "eighty-two million, eight hundred thirty-nine thousand, three hundred eighty-nine".