9216849 has 4 divisors (see below), whose sum is σ = 12289136. Its totient is φ = 6144564.

The previous prime is 9216847. The next prime is 9216853. The reversal of 9216849 is 9486129.

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.

It is not a de Polignac number, because 9216849 - 2¹ = 9216847 is a prime.

It is a Duffinian number.

9216849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9216847) 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, 1536139 + ... + 1536144.

It is an arithmetic number, because the mean of its divisors is an integer number (3072284).

Almost surely, 2^9216849 is an apocalyptic number.

It is an amenable number.

9216849 is a deficient number, since it is larger than the sum of its proper divisors (3072287).

9216849 is a wasteful number, since it uses less digits than its factorization.

9216849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072286.

The product of its digits is 31104, while the sum is 39.

The square root of 9216849 is about 3035.9263825067. The cubic root of 9216849 is about 209.6657494451.

The spelling of 9216849 in words is "nine million, two hundred sixteen thousand, eight hundred forty-nine".