2040985 has 4 divisors (see below), whose sum is σ = 2449188. Its totient is φ = 1632784.

The previous prime is 2040971. The next prime is 2040989. The reversal of 2040985 is 5890402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1413721 + 627264 = 1189^2 + 792^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040985 - 2⁹ = 2040473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040989) 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 3 ways as a sum of consecutive naturals, for example, 204094 + ... + 204103.

It is an arithmetic number, because the mean of its divisors is an integer number (612297).

2^2040985 is an apocalyptic number.

It is an amenable number.

2040985 is a deficient number, since it is larger than the sum of its proper divisors (408203).

2040985 is an equidigital number, since it uses as much as digits as its factorization.

2040985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408202.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2040985 is about 1428.6304630659. The cubic root of 2040985 is about 126.8469232606.

It can be divided in two parts, 2040 and 985, that added together give a square (3025 = 55²).

The spelling of 2040985 in words is "two million, forty thousand, nine hundred eighty-five".