9172229 has 4 divisors (see below), whose sum is σ = 10006080. Its totient is φ = 8338380.

The previous prime is 9172217. The next prime is 9172237. The reversal of 9172229 is 9222719.

9172229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 9222719 = 11 ⋅838429.

It is a cyclic number.

It is not a de Polignac number, because 9172229 - 2¹⁶ = 9106693 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9172195 and 9172204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172259) 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, 416909 + ... + 416930.

It is an arithmetic number, because the mean of its divisors is an integer number (2501520).

Almost surely, 2^9172229 is an apocalyptic number.

It is an amenable number.

9172229 is a deficient number, since it is larger than the sum of its proper divisors (833851).

9172229 is a wasteful number, since it uses less digits than its factorization.

9172229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833850.

The product of its digits is 4536, while the sum is 32.

The square root of 9172229 is about 3028.5688039072. The cubic root of 9172229 is about 209.3268620008.

The spelling of 9172229 in words is "nine million, one hundred seventy-two thousand, two hundred twenty-nine".