4421661229 has 2 divisors, whose sum is σ = 4421661230. Its totient is φ = 4421661228.

The previous prime is 4421661217. The next prime is 4421661281. The reversal of 4421661229 is 9221661244.

4421661229 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4200336100 + 221325129 = 64810^2 + 14877^2 .

It is a cyclic number.

It is not a de Polignac number, because 4421661229 - 2¹¹ = 4421659181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4421665229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210830614 + 2210830615.

It is an arithmetic number, because the mean of its divisors is an integer number (2210830615).

Almost surely, 2^4421661229 is an apocalyptic number.

It is an amenable number.

4421661229 is a deficient number, since it is larger than the sum of its proper divisors (1).

4421661229 is an equidigital number, since it uses as much as digits as its factorization.

4421661229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 4421661229 is about 66495.5730030203. The cubic root of 4421661229 is about 1641.3271565595.

The spelling of 4421661229 in words is "four billion, four hundred twenty-one million, six hundred sixty-one thousand, two hundred twenty-nine".