2217843489 has 4 divisors (see below), whose sum is σ = 2957124656. Its totient is φ = 1478562324.

The previous prime is 2217843451. The next prime is 2217843497. The reversal of 2217843489 is 9843487122.

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 2217843489 - 2²⁰ = 2216794913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2217843889) 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, 369640579 + ... + 369640584.

It is an arithmetic number, because the mean of its divisors is an integer number (739281164).

Almost surely, 2^2217843489 is an apocalyptic number.

It is an amenable number.

2217843489 is a deficient number, since it is larger than the sum of its proper divisors (739281167).

2217843489 is an equidigital number, since it uses as much as digits as its factorization.

2217843489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739281166.

The product of its digits is 774144, while the sum is 48.

The square root of 2217843489 is about 47093.9856988130. The cubic root of 2217843489 is about 1304.0982087654.

The spelling of 2217843489 in words is "two billion, two hundred seventeen million, eight hundred forty-three thousand, four hundred eighty-nine".