84808271 has 2 divisors, whose sum is σ = 84808272. Its totient is φ = 84808270.

The previous prime is 84808247. The next prime is 84808277. The reversal of 84808271 is 17280848.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84808271 is a prime.

It is a Sophie Germain 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 (84808277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42404135 + 42404136.

It is an arithmetic number, because the mean of its divisors is an integer number (42404136).

Almost surely, 2^84808271 is an apocalyptic number.

84808271 is a deficient number, since it is larger than the sum of its proper divisors (1).

84808271 is an equidigital number, since it uses as much as digits as its factorization.

84808271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 84808271 is about 9209.1406222296. The cubic root of 84808271 is about 439.3521302021.

The spelling of 84808271 in words is "eighty-four million, eight hundred eight thousand, two hundred seventy-one".