4389921229 has 2 divisors, whose sum is σ = 4389921230. Its totient is φ = 4389921228.

The previous prime is 4389921227. The next prime is 4389921233. The reversal of 4389921229 is 9221299834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2335112329 + 2054808900 = 48323^2 + 45330^2 .

It is a cyclic number.

It is not a de Polignac number, because 4389921229 - 2¹ = 4389921227 is a prime.

Together with 4389921227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4389921223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194960614 + 2194960615.

It is an arithmetic number, because the mean of its divisors is an integer number (2194960615).

Almost surely, 2^4389921229 is an apocalyptic number.

It is an amenable number.

4389921229 is a deficient number, since it is larger than the sum of its proper divisors (1).

4389921229 is an equidigital number, since it uses as much as digits as its factorization.

4389921229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 4389921229 is about 66256.4806566120. The cubic root of 4389921229 is about 1637.3904101940.

The spelling of 4389921229 in words is "four billion, three hundred eighty-nine million, nine hundred twenty-one thousand, two hundred twenty-nine".