2443309 has 8 divisors (see below), whose sum is σ = 2676960. Its totient is φ = 2211600.

The previous prime is 2443283. The next prime is 2443351. The reversal of 2443309 is 9033442.

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 2443309 - 2⁵ = 2443277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443109) 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, 3994 + ... + 4564.

It is an arithmetic number, because the mean of its divisors is an integer number (334620).

2^2443309 is an apocalyptic number.

It is an amenable number.

2443309 is a deficient number, since it is larger than the sum of its proper divisors (233651).

2443309 is a wasteful number, since it uses less digits than its factorization.

2443309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 2443309 is about 1563.1087614111. The cubic root of 2443309 is about 134.6871401684.

It can be divided in two parts, 244 and 3309, that added together give a palindrome (3553).

The spelling of 2443309 in words is "two million, four hundred forty-three thousand, three hundred nine".