84171117 has 8 divisors (see below), whose sum is σ = 113765824. Its totient is φ = 55345248.

The previous prime is 84171089. The next prime is 84171119. The reversal of 84171117 is 71117148.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84171117 - 2¹⁵ = 84138349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84171119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191953 + ... + 192390.

It is an arithmetic number, because the mean of its divisors is an integer number (14220728).

Almost surely, 2^84171117 is an apocalyptic number.

It is an amenable number.

84171117 is a deficient number, since it is larger than the sum of its proper divisors (29594707).

84171117 is a wasteful number, since it uses less digits than its factorization.

84171117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384419.

The product of its digits is 1568, while the sum is 30.

The square root of 84171117 is about 9174.4818382293. The cubic root of 84171117 is about 438.2490972727.

The spelling of 84171117 in words is "eighty-four million, one hundred seventy-one thousand, one hundred seventeen".