2216489 has 4 divisors (see below), whose sum is σ = 2418000. Its totient is φ = 2014980.

The previous prime is 2216479. The next prime is 2216519. The reversal of 2216489 is 9846122.

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 2216489 - 2²⁰ = 1167913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2216479) 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, 100739 + ... + 100760.

It is an arithmetic number, because the mean of its divisors is an integer number (604500).

2^2216489 is an apocalyptic number.

It is an amenable number.

2216489 is a deficient number, since it is larger than the sum of its proper divisors (201511).

2216489 is a wasteful number, since it uses less digits than its factorization.

2216489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201510.

The product of its digits is 6912, while the sum is 32.

The square root of 2216489 is about 1488.7877619056. The cubic root of 2216489 is about 130.3832673588.

The spelling of 2216489 in words is "two million, two hundred sixteen thousand, four hundred eighty-nine".