2389639 has 16 divisors (see below), whose sum is σ = 2965248. Its totient is φ = 1878912.

The previous prime is 2389637. The next prime is 2389643. The reversal of 2389639 is 9369832.

2389639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2389639 - 2¹ = 2389637 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 (2389633) 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 15 ways as a sum of consecutive naturals, for example, 4884 + ... + 5350.

It is an arithmetic number, because the mean of its divisors is an integer number (185328).

2^2389639 is an apocalyptic number.

2389639 is a deficient number, since it is larger than the sum of its proper divisors (575609).

2389639 is a wasteful number, since it uses less digits than its factorization.

2389639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its digits is 69984, while the sum is 40.

The square root of 2389639 is about 1545.8457232208. The cubic root of 2389639 is about 133.6936455750.

The spelling of 2389639 in words is "two million, three hundred eighty-nine thousand, six hundred thirty-nine".