9992171 has 4 divisors (see below), whose sum is σ = 11419632. Its totient is φ = 8564712.

The previous prime is 9992161. The next prime is 9992173. The reversal of 9992171 is 1712999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1712999 = 283 ⋅6053.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9992171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9992173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713720 + ... + 713733.

It is an arithmetic number, because the mean of its divisors is an integer number (2854908).

Almost surely, 2^9992171 is an apocalyptic number.

9992171 is a deficient number, since it is larger than the sum of its proper divisors (1427461).

9992171 is a wasteful number, since it uses less digits than its factorization.

9992171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427460.

The product of its digits is 10206, while the sum is 38.

The square root of 9992171 is about 3161.0395442006. The cubic root of 9992171 is about 215.3872307604.

The spelling of 9992171 in words is "nine million, nine hundred ninety-two thousand, one hundred seventy-one".