82341209 has 2 divisors, whose sum is σ = 82341210. Its totient is φ = 82341208.

The previous prime is 82341143. The next prime is 82341211. The reversal of 82341209 is 90214328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81956809 + 384400 = 9053^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 82341209 - 2¹⁶ = 82275673 is a prime.

Together with 82341211, 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 (82341289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41170604 + 41170605.

It is an arithmetic number, because the mean of its divisors is an integer number (41170605).

Almost surely, 2^82341209 is an apocalyptic number.

It is an amenable number.

82341209 is a deficient number, since it is larger than the sum of its proper divisors (1).

82341209 is an equidigital number, since it uses as much as digits as its factorization.

82341209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 82341209 is about 9074.2056952661. The cubic root of 82341209 is about 435.0499066359.

The spelling of 82341209 in words is "eighty-two million, three hundred forty-one thousand, two hundred nine".