2843985 has 8 divisors (see below), whose sum is σ = 4550400. Its totient is φ = 1516784.

The previous prime is 2843969. The next prime is 2843987. The reversal of 2843985 is 5893482.

It is a happy number.

2843985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2843985 - 2⁴ = 2843969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2843987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94785 + ... + 94814.

It is an arithmetic number, because the mean of its divisors is an integer number (568800).

2^2843985 is an apocalyptic number.

It is an amenable number.

2843985 is a deficient number, since it is larger than the sum of its proper divisors (1706415).

2843985 is a wasteful number, since it uses less digits than its factorization.

2843985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189607.

The product of its digits is 69120, while the sum is 39.

The square root of 2843985 is about 1686.4118714003. The cubic root of 2843985 is about 141.6801801796.

It can be divided in two parts, 2843 and 985, that added together give a triangular number (3828 = T₈₇).

The spelling of 2843985 in words is "two million, eight hundred forty-three thousand, nine hundred eighty-five".