84170171 has 16 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 77209920.

The previous prime is 84170137. The next prime is 84170173. The reversal of 84170171 is 17107148.

It is not a de Polignac number, because 84170171 - 2¹⁴ = 84153787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84170173) 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 in 15 ways as a sum of consecutive naturals, for example, 129770 + ... + 130416.

It is an arithmetic number, because the mean of its divisors is an integer number (5715360).

Almost surely, 2^84170171 is an apocalyptic number.

84170171 is a deficient number, since it is larger than the sum of its proper divisors (7275589).

84170171 is a wasteful number, since it uses less digits than its factorization.

84170171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 84170171 is about 9174.4302820393. The cubic root of 84170171 is about 438.2474554380.

The spelling of 84170171 in words is "eighty-four million, one hundred seventy thousand, one hundred seventy-one".