2240749 has 4 divisors (see below), whose sum is σ = 2560864. Its totient is φ = 1920636.

The previous prime is 2240747. The next prime is 2240759. The reversal of 2240749 is 9470422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2240749 - 2¹ = 2240747 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 (2240741) 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, 160047 + ... + 160060.

It is an arithmetic number, because the mean of its divisors is an integer number (640216).

2^2240749 is an apocalyptic number.

It is an amenable number.

2240749 is a deficient number, since it is larger than the sum of its proper divisors (320115).

2240749 is an equidigital number, since it uses as much as digits as its factorization.

2240749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320114.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 2240749 is about 1496.9131571337. The cubic root of 2240749 is about 130.8572342864.

The spelling of 2240749 in words is "two million, two hundred forty thousand, seven hundred forty-nine".