641043229 has 2 divisors, whose sum is σ = 641043230. Its totient is φ = 641043228.

The previous prime is 641043197. The next prime is 641043239. The reversal of 641043229 is 922340146.

It is a happy number.

641043229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 463540900 + 177502329 = 21530^2 + 13323^2 .

It is a cyclic number.

It is not a de Polignac number, because 641043229 - 2⁵ = 641043197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 641043229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641043239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320521614 + 320521615.

It is an arithmetic number, because the mean of its divisors is an integer number (320521615).

Almost surely, 2^641043229 is an apocalyptic number.

It is an amenable number.

641043229 is a deficient number, since it is larger than the sum of its proper divisors (1).

641043229 is an equidigital number, since it uses as much as digits as its factorization.

641043229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 641043229 is about 25318.8315093726. The cubic root of 641043229 is about 862.2418653125.

The spelling of 641043229 in words is "six hundred forty-one million, forty-three thousand, two hundred twenty-nine".