84984871 has 2 divisors, whose sum is σ = 84984872. Its totient is φ = 84984870.

The previous prime is 84984869. The next prime is 84984947. The reversal of 84984871 is 17848948.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84984871 - 2¹ = 84984869 is a prime.

Together with 84984869, 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 (84984271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42492435 + 42492436.

It is an arithmetic number, because the mean of its divisors is an integer number (42492436).

Almost surely, 2^84984871 is an apocalyptic number.

84984871 is a deficient number, since it is larger than the sum of its proper divisors (1).

84984871 is an equidigital number, since it uses as much as digits as its factorization.

84984871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 84984871 is about 9218.7239355564. The cubic root of 84984871 is about 439.6568795362.

The spelling of 84984871 in words is "eighty-four million, nine hundred eighty-four thousand, eight hundred seventy-one".