9009216 has 42 divisors (see below), whose sum is σ = 25824942. Its totient is φ = 3002880.

The previous prime is 9009199. The next prime is 9009223. The reversal of 9009216 is 6129009.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 9216 = 3000^2 + 96^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9009216.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7245 + ... + 8396.

Almost surely, 2^9009216 is an apocalyptic number.

9009216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

9009216 is an abundant number, since it is smaller than the sum of its proper divisors (16815726).

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

9009216 is a wasteful number, since it uses less digits than its factorization.

9009216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15659 (or 15646 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 9009216 is about 3001.5356069852. The cubic root of 9009216 is about 208.0793582787.

It can be divided in two parts, 900 and 9216, that multiplied together give a square (8294400 = 2880²).

The spelling of 9009216 in words is "nine million, nine thousand, two hundred sixteen".