4291221289 has 2 divisors, whose sum is σ = 4291221290. Its totient is φ = 4291221288.

The previous prime is 4291221281. The next prime is 4291221299. The reversal of 4291221289 is 9821221924.

4291221289 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., 2408355625 + 1882865664 = 49075^2 + 43392^2 .

It is a cyclic number.

It is not a de Polignac number, because 4291221289 - 2³ = 4291221281 is a prime.

It is not a weakly prime, because it can be changed into another prime (4291221281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145610644 + 2145610645.

It is an arithmetic number, because the mean of its divisors is an integer number (2145610645).

Almost surely, 2^4291221289 is an apocalyptic number.

It is an amenable number.

4291221289 is a deficient number, since it is larger than the sum of its proper divisors (1).

4291221289 is an equidigital number, since it uses as much as digits as its factorization.

4291221289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 40.

The square root of 4291221289 is about 65507.4140002489. The cubic root of 4291221289 is about 1625.0259611158.

The spelling of 4291221289 in words is "four billion, two hundred ninety-one million, two hundred twenty-one thousand, two hundred eighty-nine".