2229749 has 4 divisors (see below), whose sum is σ = 2236320. Its totient is φ = 2223180.

The previous prime is 2229713. The next prime is 2229767. The reversal of 2229749 is 9479222.

It is a happy number.

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 2229749 - 2¹² = 2225653 is a prime.

It is a d-powerful number, because it can be written as 2 + 2¹⁷ + 2²¹ + 9³ + 7² + 4² + 9³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229769) 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, 2747 + ... + 3464.

It is an arithmetic number, because the mean of its divisors is an integer number (559080).

2^2229749 is an apocalyptic number.

It is an amenable number.

2229749 is a deficient number, since it is larger than the sum of its proper divisors (6571).

2229749 is an equidigital number, since it uses as much as digits as its factorization.

2229749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570.

The product of its digits is 18144, while the sum is 35.

The square root of 2229749 is about 1493.2344089258. The cubic root of 2229749 is about 130.6427537051.

The spelling of 2229749 in words is "two million, two hundred twenty-nine thousand, seven hundred forty-nine".