9216905 has 8 divisors (see below), whose sum is σ = 11541312. Its totient is φ = 7052848.

The previous prime is 9216869. The next prime is 9216913. The reversal of 9216905 is 5096129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9216905 - 2¹² = 9212809 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39959 + ... + 40188.

It is an arithmetic number, because the mean of its divisors is an integer number (1442664).

Almost surely, 2^9216905 is an apocalyptic number.

It is an amenable number.

9216905 is a deficient number, since it is larger than the sum of its proper divisors (2324407).

9216905 is a wasteful number, since it uses less digits than its factorization.

9216905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80175.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 9216905 is about 3035.9356053777. The cubic root of 9216905 is about 209.6661740753. Note that the first 3 decimals are identical.

The spelling of 9216905 in words is "nine million, two hundred sixteen thousand, nine hundred five".