12216489 has 8 divisors (see below), whose sum is σ = 17246880. Its totient is φ = 7665216.

The previous prime is 12216439. The next prime is 12216493. The reversal of 12216489 is 98461221.

12216489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12216489 - 2¹¹ = 12214441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12216419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119719 + ... + 119820.

It is an arithmetic number, because the mean of its divisors is an integer number (2155860).

Almost surely, 2^12216489 is an apocalyptic number.

It is an amenable number.

12216489 is a deficient number, since it is larger than the sum of its proper divisors (5030391).

12216489 is a wasteful number, since it uses less digits than its factorization.

12216489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239559.

The product of its digits is 6912, while the sum is 33.

The square root of 12216489 is about 3495.2094357849. The cubic root of 12216489 is about 230.3114181017.

The spelling of 12216489 in words is "twelve million, two hundred sixteen thousand, four hundred eighty-nine".