2443239 has 6 divisors (see below), whose sum is σ = 3529136. Its totient is φ = 1628820.

The previous prime is 2443219. The next prime is 2443241. The reversal of 2443239 is 9323442.

It is a happy number.

It is not a de Polignac number, because 2443239 - 2¹⁶ = 2377703 is a prime.

It is a super-2 number, since 2×2443239² = 11938833622242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 4² + 4⁷ + 3¹¹ + 2¹⁹ + 3¹³ + 9 .

It is a Duffinian number.

2443239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135727 + ... + 135744.

2^2443239 is an apocalyptic number.

2443239 is a deficient number, since it is larger than the sum of its proper divisors (1085897).

2443239 is a wasteful number, since it uses less digits than its factorization.

2443239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271477 (or 271474 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 2443239 is about 1563.0863699745. The cubic root of 2443239 is about 134.6858539087.

The spelling of 2443239 in words is "two million, four hundred forty-three thousand, two hundred thirty-nine".