2056708439 has 4 divisors (see below), whose sum is σ = 2056915224. Its totient is φ = 2056501656.

The previous prime is 2056708427. The next prime is 2056708453. The reversal of 2056708439 is 9348076502.

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-2056708439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2056708439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056708639) 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, 87677 + ... + 108630.

It is an arithmetic number, because the mean of its divisors is an integer number (514228806).

Almost surely, 2^2056708439 is an apocalyptic number.

2056708439 is a deficient number, since it is larger than the sum of its proper divisors (206785).

2056708439 is a wasteful number, since it uses less digits than its factorization.

2056708439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206784.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 2056708439 is about 45350.9474983710. The cubic root of 2056708439 is about 1271.7182683587.

The spelling of 2056708439 in words is "two billion, fifty-six million, seven hundred eight thousand, four hundred thirty-nine".