2212889 has 6 divisors (see below), whose sum is σ = 2574234. Its totient is φ = 1896720.

The previous prime is 2212883. The next prime is 2212891. The reversal of 2212889 is 9882122.

It can be written as a sum of positive squares in only one way, i.e., 2059225 + 153664 = 1435^2 + 392^2 .

It is not a de Polignac number, because 2212889 - 2⁸ = 2212633 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 (2212883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22532 + ... + 22629.

It is an arithmetic number, because the mean of its divisors is an integer number (429039).

2^2212889 is an apocalyptic number.

It is an amenable number.

2212889 is a deficient number, since it is larger than the sum of its proper divisors (361345).

2212889 is an equidigital number, since it uses as much as digits as its factorization.

2212889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45175 (or 45168 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 2212889 is about 1487.5782332368. The cubic root of 2212889 is about 130.3126400269.

The spelling of 2212889 in words is "two million, two hundred twelve thousand, eight hundred eighty-nine".