82079321 has 2 divisors, whose sum is σ = 82079322. Its totient is φ = 82079320.

The previous prime is 82079317. The next prime is 82079329. The reversal of 82079321 is 12397028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48497296 + 33582025 = 6964^2 + 5795^2 .

It is a cyclic number.

It is not a de Polignac number, because 82079321 - 2² = 82079317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82079329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41039660 + 41039661.

It is an arithmetic number, because the mean of its divisors is an integer number (41039661).

Almost surely, 2^82079321 is an apocalyptic number.

It is an amenable number.

82079321 is a deficient number, since it is larger than the sum of its proper divisors (1).

82079321 is an equidigital number, since it uses as much as digits as its factorization.

82079321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 82079321 is about 9059.7638490195. The cubic root of 82079321 is about 434.5881882350.

The spelling of 82079321 in words is "eighty-two million, seventy-nine thousand, three hundred twenty-one".