2597839 has 4 divisors (see below), whose sum is σ = 2611224. Its totient is φ = 2584456.

The previous prime is 2597809. The next prime is 2597857. The reversal of 2597839 is 9387952.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2597839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2597795 and 2597804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2597809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6397 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (652806).

2^2597839 is an apocalyptic number.

2597839 is a deficient number, since it is larger than the sum of its proper divisors (13385).

2597839 is a wasteful number, since it uses less digits than its factorization.

2597839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13384.

The product of its digits is 136080, while the sum is 43.

The square root of 2597839 is about 1611.7813127096. The cubic root of 2597839 is about 137.4687796886.

The spelling of 2597839 in words is "two million, five hundred ninety-seven thousand, eight hundred thirty-nine".