2443289 has 4 divisors (see below), whose sum is σ = 2479824. Its totient is φ = 2406756.

The previous prime is 2443283. The next prime is 2443351. The reversal of 2443289 is 9823442.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9823442 = 2 ⋅4911721.

It is a cyclic number.

It is not a de Polignac number, because 2443289 - 2⁸ = 2443033 is a prime.

It is a super-2 number, since 2×2443289² = 11939322275042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2443283) 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, 18167 + ... + 18300.

It is an arithmetic number, because the mean of its divisors is an integer number (619956).

2^2443289 is an apocalyptic number.

It is an amenable number.

2443289 is a deficient number, since it is larger than the sum of its proper divisors (36535).

2443289 is an equidigital number, since it uses as much as digits as its factorization.

2443289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36534.

The product of its digits is 13824, while the sum is 32.

The square root of 2443289 is about 1563.1023638905. The cubic root of 2443289 is about 134.6867726681.

The spelling of 2443289 in words is "two million, four hundred forty-three thousand, two hundred eighty-nine".