3849647729 has 2 divisors, whose sum is σ = 3849647730. Its totient is φ = 3849647728.

The previous prime is 3849647689. The next prime is 3849647731. The reversal of 3849647729 is 9277469483.

3849647729 is digitally balanced in base 3, 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., 2542680625 + 1306967104 = 50425^2 + 36152^2 .

It is a cyclic number.

It is not a de Polignac number, because 3849647729 - 2²⁸ = 3581212273 is a prime.

Together with 3849647731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3849647629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1924823864 + 1924823865.

It is an arithmetic number, because the mean of its divisors is an integer number (1924823865).

Almost surely, 2^3849647729 is an apocalyptic number.

It is an amenable number.

3849647729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3849647729 is an equidigital number, since it uses as much as digits as its factorization.

3849647729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 59.

The square root of 3849647729 is about 62045.5294844036. The cubic root of 3849647729 is about 1567.2574035166.

The spelling of 3849647729 in words is "three billion, eight hundred forty-nine million, six hundred forty-seven thousand, seven hundred twenty-nine".