3897716729 has 2 divisors, whose sum is σ = 3897716730. Its totient is φ = 3897716728.

The previous prime is 3897716681. The next prime is 3897716731. The reversal of 3897716729 is 9276177983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3876307600 + 21409129 = 62260^2 + 4627^2 .

It is a cyclic number.

It is not a de Polignac number, because 3897716729 - 2¹² = 3897712633 is a prime.

Together with 3897716731, 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 (3897716129) 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, 1948858364 + 1948858365.

It is an arithmetic number, because the mean of its divisors is an integer number (1948858365).

Almost surely, 2^3897716729 is an apocalyptic number.

It is an amenable number.

3897716729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3897716729 is an equidigital number, since it uses as much as digits as its factorization.

3897716729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 59.

The square root of 3897716729 is about 62431.6965090650. The cubic root of 3897716729 is about 1573.7536765249.

The spelling of 3897716729 in words is "three billion, eight hundred ninety-seven million, seven hundred sixteen thousand, seven hundred twenty-nine".