2241749 has 4 divisors (see below), whose sum is σ = 2245836. Its totient is φ = 2237664.

The previous prime is 2241727. The next prime is 2241751. The reversal of 2241749 is 9471422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9471422 = 2 ⋅4735711.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 1612900 = 793^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2241749 - 2²⁰ = 1193173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241709) 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, 1064 + ... + 2369.

It is an arithmetic number, because the mean of its divisors is an integer number (561459).

2^2241749 is an apocalyptic number.

It is an amenable number.

2241749 is a deficient number, since it is larger than the sum of its proper divisors (4087).

2241749 is an equidigital number, since it uses as much as digits as its factorization.

2241749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086.

The product of its digits is 4032, while the sum is 29.

The square root of 2241749 is about 1497.2471405884. The cubic root of 2241749 is about 130.8766976850.

The spelling of 2241749 in words is "two million, two hundred forty-one thousand, seven hundred forty-nine".