2857859 has 4 divisors (see below), whose sum is σ = 2950080. Its totient is φ = 2765640.

The previous prime is 2857849. The next prime is 2857861. The reversal of 2857859 is 9587582.

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-2857859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857849) 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, 46064 + ... + 46125.

It is an arithmetic number, because the mean of its divisors is an integer number (737520).

2^2857859 is an apocalyptic number.

2857859 is a deficient number, since it is larger than the sum of its proper divisors (92221).

2857859 is an equidigital number, since it uses as much as digits as its factorization.

2857859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92220.

The product of its digits is 201600, while the sum is 44.

The square root of 2857859 is about 1690.5203340984. The cubic root of 2857859 is about 141.9101958130.

The spelling of 2857859 in words is "two million, eight hundred fifty-seven thousand, eight hundred fifty-nine".