2856959 has 4 divisors (see below), whose sum is σ = 3265104. Its totient is φ = 2448816.

The previous prime is 2856923. The next prime is 2856961. The reversal of 2856959 is 9596582.

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-2856959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204062 + ... + 204075.

It is an arithmetic number, because the mean of its divisors is an integer number (816276).

2^2856959 is an apocalyptic number.

2856959 is a deficient number, since it is larger than the sum of its proper divisors (408145).

2856959 is an equidigital number, since it uses as much as digits as its factorization.

2856959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408144.

The product of its digits is 194400, while the sum is 44.

The square root of 2856959 is about 1690.2541229058. The cubic root of 2856959 is about 141.8952974123.

The spelling of 2856959 in words is "two million, eight hundred fifty-six thousand, nine hundred fifty-nine".