2216089 has 4 divisors (see below), whose sum is σ = 2257956. Its totient is φ = 2174224.

The previous prime is 2216087. The next prime is 2216101. The reversal of 2216089 is 9806122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 870489 + 1345600 = 933^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216089 - 2¹ = 2216087 is a prime.

It is a super-2 number, since 2×2216089² = 9822100911842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216083) 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, 20854 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (564489).

2^2216089 is an apocalyptic number.

It is an amenable number.

2216089 is a deficient number, since it is larger than the sum of its proper divisors (41867).

2216089 is an equidigital number, since it uses as much as digits as its factorization.

2216089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41866.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2216089 is about 1488.6534183617. The cubic root of 2216089 is about 130.3754236558.

The spelling of 2216089 in words is "two million, two hundred sixteen thousand, eighty-nine".