2443539 has 8 divisors (see below), whose sum is σ = 3723520. Its totient is φ = 1396296.

The previous prime is 2443537. The next prime is 2443541. The reversal of 2443539 is 9353442.

It is an interprime number because it is at equal distance from previous prime (2443537) and next prime (2443541).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2443539 - 2¹ = 2443537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2443531) 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, 58159 + ... + 58200.

It is an arithmetic number, because the mean of its divisors is an integer number (465440).

2^2443539 is an apocalyptic number.

2443539 is a deficient number, since it is larger than the sum of its proper divisors (1279981).

2443539 is a wasteful number, since it uses less digits than its factorization.

2443539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116369.

The product of its digits is 12960, while the sum is 30.

The square root of 2443539 is about 1563.1823310158. The cubic root of 2443539 is about 134.6913662774.

Subtracting 2443539 from its reverse (9353442), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2443539 in words is "two million, four hundred forty-three thousand, five hundred thirty-nine".