9109216 has 48 divisors (see below), whose sum is σ = 18860688. Its totient is φ = 4326400.

The previous prime is 9109207. The next prime is 9109223. The reversal of 9109216 is 6129019.

It is a super-2 number, since 2×9109216² = 165955632269312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 69471 + ... + 69601.

It is an arithmetic number, because the mean of its divisors is an integer number (392931).

Almost surely, 2^9109216 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 9109216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9430344).

9109216 is an abundant number, since it is smaller than the sum of its proper divisors (9751472).

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

9109216 is a wasteful number, since it uses less digits than its factorization.

9109216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 9109216 is about 3018.1477763688. The cubic root of 9109216 is about 208.8464031764.

It can be divided in two parts, 910 and 9216, that multiplied together give a triangular number (8386560 = T₄₀₉₅).

The spelling of 9109216 in words is "nine million, one hundred nine thousand, two hundred sixteen".