2217239 has 6 divisors (see below), whose sum is σ = 2274360. Its totient is φ = 2161520.

The previous prime is 2217233. The next prime is 2217247. The reversal of 2217239 is 9327122.

2217239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2217239 - 2¹² = 2213143 is a prime.

It is a super-2 number, since 2×2217239² = 9832297566242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1022 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (379060).

2^2217239 is an apocalyptic number.

2217239 is a deficient number, since it is larger than the sum of its proper divisors (57121).

2217239 is an equidigital number, since it uses as much as digits as its factorization.

2217239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1360 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 2217239 is about 1489.0396233815. The cubic root of 2217239 is about 130.3979717589.

The spelling of 2217239 in words is "two million, two hundred seventeen thousand, two hundred thirty-nine".