9894171 has 16 divisors (see below), whose sum is σ = 15428864. Its totient is φ = 5521824.

The previous prime is 9894151. The next prime is 9894173. The reversal of 9894171 is 1714989.

It is a happy number.

It is not a de Polignac number, because 9894171 - 2⁶ = 9894107 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is the 3146-th Hogben number.

It is a Duffinian number.

9894171 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9894173) by changing a digit.

It is a nontrivial repunit in base 3145.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4576 + ... + 6381.

It is an arithmetic number, because the mean of its divisors is an integer number (964304).

Almost surely, 2^9894171 is an apocalyptic number.

9894171 is a deficient number, since it is larger than the sum of its proper divisors (5534693).

9894171 is a wasteful number, since it uses less digits than its factorization.

9894171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010.

The product of its digits is 18144, while the sum is 39.

The square root of 9894171 is about 3145.5001192179. The cubic root of 9894171 is about 214.6807665447.

The spelling of 9894171 in words is "nine million, eight hundred ninety-four thousand, one hundred seventy-one".