2859985 has 8 divisors (see below), whose sum is σ = 3488616. Its totient is φ = 2250240.

The previous prime is 2859979. The next prime is 2859991. The reversal of 2859985 is 5899582.

It is an interprime number because it is at equal distance from previous prime (2859979) and next prime (2859991).

It can be written as a sum of positive squares in 4 ways, for example, as 117649 + 2742336 = 343^2 + 1656^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2859985 - 2³ = 2859977 is a prime.

It is a Duffinian number.

2859985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4384 + ... + 4993.

It is an arithmetic number, because the mean of its divisors is an integer number (436077).

2^2859985 is an apocalyptic number.

It is an amenable number.

2859985 is a deficient number, since it is larger than the sum of its proper divisors (628631).

2859985 is an equidigital number, since it uses as much as digits as its factorization.

2859985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9443.

The product of its digits is 259200, while the sum is 46.

The square root of 2859985 is about 1691.1490176800. The cubic root of 2859985 is about 141.9453767293.

It can be divided in two parts, 2859 and 985, that added together give a square (3844 = 62²).

The spelling of 2859985 in words is "two million, eight hundred fifty-nine thousand, nine hundred eighty-five".