84938989171 has 2 divisors, whose sum is σ = 84938989172. Its totient is φ = 84938989170.

The previous prime is 84938989153. The next prime is 84938989189. The reversal of 84938989171 is 17198983948.

It is a balanced prime because it is at equal distance from previous prime (84938989153) and next prime (84938989189).

It is a cyclic number.

It is not a de Polignac number, because 84938989171 - 2⁵ = 84938989139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84938989097 and 84938989106.

It is not a weakly prime, because it can be changed into another prime (84938989141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42469494585 + 42469494586.

It is an arithmetic number, because the mean of its divisors is an integer number (42469494586).

Almost surely, 2^84938989171 is an apocalyptic number.

84938989171 is a deficient number, since it is larger than the sum of its proper divisors (1).

84938989171 is an equidigital number, since it uses as much as digits as its factorization.

84938989171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 67.

The spelling of 84938989171 in words is "eighty-four billion, nine hundred thirty-eight million, nine hundred eighty-nine thousand, one hundred seventy-one".