4189556729 has 2 divisors, whose sum is σ = 4189556730. Its totient is φ = 4189556728.

The previous prime is 4189556663. The next prime is 4189556741. The reversal of 4189556729 is 9276559814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4189066729 + 490000 = 64723^2 + 700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4189556729 is a prime.

It is not a weakly prime, because it can be changed into another prime (4189556629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2094778364 + 2094778365.

It is an arithmetic number, because the mean of its divisors is an integer number (2094778365).

Almost surely, 2^4189556729 is an apocalyptic number.

It is an amenable number.

4189556729 is a deficient number, since it is larger than the sum of its proper divisors (1).

4189556729 is an equidigital number, since it uses as much as digits as its factorization.

4189556729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 56.

The square root of 4189556729 is about 64726.7852515479. The cubic root of 4189556729 is about 1612.0902763992.

The spelling of 4189556729 in words is "four billion, one hundred eighty-nine million, five hundred fifty-six thousand, seven hundred twenty-nine".