2085749 has 4 divisors (see below), whose sum is σ = 2089164. Its totient is φ = 2082336.

The previous prime is 2085739. The next prime is 2085757. The reversal of 2085749 is 9475802.

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 1643524 + 442225 = 1282^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085749 - 2⁸ = 2085493 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 0 + 8³ + 5⁹ + 7 + 4⁵ + 9 .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085739) 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, 512 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (522291).

2^2085749 is an apocalyptic number.

It is an amenable number.

2085749 is a deficient number, since it is larger than the sum of its proper divisors (3415).

2085749 is an equidigital number, since it uses as much as digits as its factorization.

2085749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2085749 is about 1444.2122420198. The cubic root of 2085749 is about 127.7675836158.

The spelling of 2085749 in words is "two million, eighty-five thousand, seven hundred forty-nine".