2439439 has 4 divisors (see below), whose sum is σ = 2443480. Its totient is φ = 2435400.

The previous prime is 2439427. The next prime is 2439443. The reversal of 2439439 is 9349342.

2439439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9349342 = 2 ⋅4674671.

It is a cyclic number.

It is not a de Polignac number, because 2439439 - 2⁵ = 2439407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 912 + ... + 2389.

It is an arithmetic number, because the mean of its divisors is an integer number (610870).

2^2439439 is an apocalyptic number.

2439439 is a deficient number, since it is larger than the sum of its proper divisors (4041).

2439439 is an equidigital number, since it uses as much as digits as its factorization.

2439439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040.

The product of its digits is 23328, while the sum is 34.

The square root of 2439439 is about 1561.8703531343. The cubic root of 2439439 is about 134.6159914824.

Subtracting 2439439 from its reverse (9349342), we obtain a triangular number (6909903 = T₃₇₁₇).

It can be divided in two parts, 2 and 439439, that multiplied together give a palindrome (878878).

The spelling of 2439439 in words is "two million, four hundred thirty-nine thousand, four hundred thirty-nine".