2539439 has 8 divisors (see below), whose sum is σ = 2918400. Its totient is φ = 2164536.

The previous prime is 2539429. The next prime is 2539441. The reversal of 2539439 is 9349352.

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 2539439 - 2⁴ = 2539423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2539399 and 2539408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539429) 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, 482 + ... + 2304.

It is an arithmetic number, because the mean of its divisors is an integer number (364800).

2^2539439 is an apocalyptic number.

2539439 is a deficient number, since it is larger than the sum of its proper divisors (378961).

2539439 is a wasteful number, since it uses less digits than its factorization.

2539439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029.

The product of its digits is 29160, while the sum is 35.

The square root of 2539439 is about 1593.5617339783. The cubic root of 2539439 is about 136.4308531783.

The spelling of 2539439 in words is "two million, five hundred thirty-nine thousand, four hundred thirty-nine".