84079271 has 2 divisors, whose sum is σ = 84079272. Its totient is φ = 84079270.

The previous prime is 84079267. The next prime is 84079273. The reversal of 84079271 is 17297048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84079271 - 2² = 84079267 is a prime.

Together with 84079273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84079273) 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, 42039635 + 42039636.

It is an arithmetic number, because the mean of its divisors is an integer number (42039636).

Almost surely, 2^84079271 is an apocalyptic number.

84079271 is a deficient number, since it is larger than the sum of its proper divisors (1).

84079271 is an equidigital number, since it uses as much as digits as its factorization.

84079271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 84079271 is about 9169.4749577061. The cubic root of 84079271 is about 438.0896360963.

The spelling of 84079271 in words is "eighty-four million, seventy-nine thousand, two hundred seventy-one".