4000668229 has 2 divisors, whose sum is σ = 4000668230. Its totient is φ = 4000668228.

The previous prime is 4000668227. The next prime is 4000668239. The reversal of 4000668229 is 9228660004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2543184900 + 1457483329 = 50430^2 + 38177^2 .

It is a cyclic number.

It is not a de Polignac number, because 4000668229 - 2¹ = 4000668227 is a prime.

Together with 4000668227, 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 (4000668227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000334114 + 2000334115.

It is an arithmetic number, because the mean of its divisors is an integer number (2000334115).

Almost surely, 2^4000668229 is an apocalyptic number.

It is an amenable number.

4000668229 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000668229 is an equidigital number, since it uses as much as digits as its factorization.

4000668229 is an evil number, because the sum of its binary digits is even.

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

The square root of 4000668229 is about 63250.8357968494. The cubic root of 4000668229 is about 1587.4894426644.

The spelling of 4000668229 in words is "four billion, six hundred sixty-eight thousand, two hundred twenty-nine".