82709279 has 2 divisors, whose sum is σ = 82709280. Its totient is φ = 82709278.

The previous prime is 82709273. The next prime is 82709293. The reversal of 82709279 is 97290728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82709279 - 2²⁰ = 81660703 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 (82709273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41354639 + 41354640.

It is an arithmetic number, because the mean of its divisors is an integer number (41354640).

Almost surely, 2^82709279 is an apocalyptic number.

82709279 is a deficient number, since it is larger than the sum of its proper divisors (1).

82709279 is an equidigital number, since it uses as much as digits as its factorization.

82709279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 82709279 is about 9094.4641953223. The cubic root of 82709279 is about 435.6971759550.

The spelling of 82709279 in words is "eighty-two million, seven hundred nine thousand, two hundred seventy-nine".