2605834939 has 4 divisors (see below), whose sum is σ = 2607632280. Its totient is φ = 2604037600.

The previous prime is 2605834897. The next prime is 2605834949. The reversal of 2605834939 is 9394385062.

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

It is a cyclic number.

It is not a de Polignac number, because 2605834939 - 2⁷ = 2605834811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2605834892 and 2605834901.

It is not an unprimeable number, because it can be changed into a prime (2605834949) 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, 896494 + ... + 899395.

It is an arithmetic number, because the mean of its divisors is an integer number (651908070).

Almost surely, 2^2605834939 is an apocalyptic number.

2605834939 is a deficient number, since it is larger than the sum of its proper divisors (1797341).

2605834939 is a wasteful number, since it uses less digits than its factorization.

2605834939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797340.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The square root of 2605834939 is about 51047.3793548699. The cubic root of 2605834939 is about 1376.0967450668.

The spelling of 2605834939 in words is "two billion, six hundred five million, eight hundred thirty-four thousand, nine hundred thirty-nine".