9447172 has 48 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 3750912.

The previous prime is 9447167. The next prime is 9447187. The reversal of 9447172 is 2717449.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42253 + ... + 42475.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^9447172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9447172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10160640).

9447172 is an abundant number, since it is smaller than the sum of its proper divisors (10874108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9447172 is a wasteful number, since it uses less digits than its factorization.

9447172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 9447172 is about 3073.6252211355. The cubic root of 9447172 is about 211.3978701639.

The spelling of 9447172 in words is "nine million, four hundred forty-seven thousand, one hundred seventy-two".