2749885 has 4 divisors (see below), whose sum is σ = 3299868. Its totient is φ = 2199904.

The previous prime is 2749883. The next prime is 2749891. The reversal of 2749885 is 5889472.

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 1907161 + 842724 = 1381^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 2749885 - 2¹ = 2749883 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 7⁵ + 4² + 9³ + 8⁵ + 8⁷ + 5⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749883) 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, 274984 + ... + 274993.

It is an arithmetic number, because the mean of its divisors is an integer number (824967).

2^2749885 is an apocalyptic number.

It is an amenable number.

2749885 is a deficient number, since it is larger than the sum of its proper divisors (549983).

2749885 is an equidigital number, since it uses as much as digits as its factorization.

2749885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549982.

The product of its digits is 161280, while the sum is 43.

The square root of 2749885 is about 1658.2777210106. The cubic root of 2749885 is about 140.1000135690.

The spelling of 2749885 in words is "two million, seven hundred forty-nine thousand, eight hundred eighty-five".