4043991929 has 2 divisors, whose sum is σ = 4043991930. Its totient is φ = 4043991928.

The previous prime is 4043991883. The next prime is 4043991949. The reversal of 4043991929 is 9291993404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3800475904 + 243516025 = 61648^2 + 15605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4043991929 is a prime.

It is not a weakly prime, because it can be changed into another prime (4043991949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021995964 + 2021995965.

It is an arithmetic number, because the mean of its divisors is an integer number (2021995965).

Almost surely, 2^4043991929 is an apocalyptic number.

It is an amenable number.

4043991929 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043991929 is an equidigital number, since it uses as much as digits as its factorization.

4043991929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 4043991929 is about 63592.3889235182. The cubic root of 4043991929 is about 1593.1992503379.

The spelling of 4043991929 in words is "four billion, forty-three million, nine hundred ninety-one thousand, nine hundred twenty-nine".