2208891 has 8 divisors (see below), whose sum is σ = 2978640. Its totient is φ = 1455872.

The previous prime is 2208889. The next prime is 2208893. The reversal of 2208891 is 1988022.

It is an interprime number because it is at equal distance from previous prime (2208889) and next prime (2208893).

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 2208891 - 2¹ = 2208889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2208893) 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, 3870 + ... + 4403.

It is an arithmetic number, because the mean of its divisors is an integer number (372330).

2^2208891 is an apocalyptic number.

2208891 is a deficient number, since it is larger than the sum of its proper divisors (769749).

2208891 is an equidigital number, since it uses as much as digits as its factorization.

2208891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8365.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 2208891 is about 1486.2338308624. The cubic root of 2208891 is about 130.2341146233.

The spelling of 2208891 in words is "two million, two hundred eight thousand, eight hundred ninety-one".