2659839 has 16 divisors (see below), whose sum is σ = 4365312. Its totient is φ = 1402848.

The previous prime is 2659801. The next prime is 2659841. The reversal of 2659839 is 9389562.

It is not a de Polignac number, because 2659839 - 2¹⁶ = 2594303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2659839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2659849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4599 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (272832).

2^2659839 is an apocalyptic number.

2659839 is a deficient number, since it is larger than the sum of its proper divisors (1705473).

2659839 is a wasteful number, since it uses less digits than its factorization.

2659839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9766.

The product of its digits is 116640, while the sum is 42.

The square root of 2659839 is about 1630.9012845663. The cubic root of 2659839 is about 138.5538027270.

The spelling of 2659839 in words is "two million, six hundred fifty-nine thousand, eight hundred thirty-nine".