4409320221 has 6 divisors (see below), whose sum is σ = 6369018110. Its totient is φ = 2939546808.

The previous prime is 4409320217. The next prime is 4409320249. The reversal of 4409320221 is 1220239044.

4409320221 is a `hidden beast` number, since 4 + 409 + 32 + 0 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2581757721 + 1827562500 = 50811^2 + 42750^2 .

It is not a de Polignac number, because 4409320221 - 2² = 4409320217 is a prime.

It is a super-2 number, since 2×4409320221² = 38884209622638977682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4409320261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 244962226 + ... + 244962243.

Almost surely, 2^4409320221 is an apocalyptic number.

It is an amenable number.

4409320221 is a deficient number, since it is larger than the sum of its proper divisors (1959697889).

4409320221 is a wasteful number, since it uses less digits than its factorization.

4409320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489924475 (or 489924472 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 4409320221 is about 66402.7124521280. The cubic root of 4409320221 is about 1639.7987336045.

Adding to 4409320221 its reverse (1220239044), we get a palindrome (5629559265).

The spelling of 4409320221 in words is "four billion, four hundred nine million, three hundred twenty thousand, two hundred twenty-one".