9172117 has 4 divisors (see below), whose sum is σ = 9654880. Its totient is φ = 8689356.

The previous prime is 9172087. The next prime is 9172133. The reversal of 9172117 is 7112719.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7112719 = 97 ⋅73327.

It is a cyclic number.

It is not a de Polignac number, because 9172117 - 2⁷ = 9171989 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172157) 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 3 ways as a sum of consecutive naturals, for example, 241353 + ... + 241390.

It is an arithmetic number, because the mean of its divisors is an integer number (2413720).

Almost surely, 2^9172117 is an apocalyptic number.

It is an amenable number.

9172117 is a deficient number, since it is larger than the sum of its proper divisors (482763).

9172117 is a wasteful number, since it uses less digits than its factorization.

9172117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482762.

The product of its digits is 882, while the sum is 28.

The square root of 9172117 is about 3028.5503132687. The cubic root of 9172117 is about 209.3260099831.

The spelling of 9172117 in words is "nine million, one hundred seventy-two thousand, one hundred seventeen".