4344340221 has 24 divisors (see below), whose sum is σ = 6786908856. Its totient is φ = 2661949440.

The previous prime is 4344340207. The next prime is 4344340243. The reversal of 4344340221 is 1220434434.

It is a happy number.

4344340221 is a `hidden beast` number, since 4 + 3 + 4 + 434 + 0 + 221 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 195692121 + 4148648100 = 13989^2 + 64410^2 .

It is not a de Polignac number, because 4344340221 - 2²¹ = 4342243069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4344340321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52420 + ... + 106941.

It is an arithmetic number, because the mean of its divisors is an integer number (282787869).

Almost surely, 2^4344340221 is an apocalyptic number.

It is an amenable number.

4344340221 is a deficient number, since it is larger than the sum of its proper divisors (2442568635).

4344340221 is a wasteful number, since it uses less digits than its factorization.

4344340221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159613 (or 159610 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 4344340221 is about 65911.6091519544. The cubic root of 4344340221 is about 1631.7036174674.

Adding to 4344340221 its reverse (1220434434), we get a palindrome (5564774655).

The spelling of 4344340221 in words is "four billion, three hundred forty-four million, three hundred forty thousand, two hundred twenty-one".