389831716697 has 2 divisors, whose sum is σ = 389831716698. Its totient is φ = 389831716696.

The previous prime is 389831716663. The next prime is 389831716699. The reversal of 389831716697 is 796617138983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387505005001 + 2326711696 = 622499^2 + 48236^2 .

It is a cyclic number.

It is not a de Polignac number, because 389831716697 - 2¹² = 389831712601 is a prime.

Together with 389831716699, 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 (389831716699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194915858348 + 194915858349.

It is an arithmetic number, because the mean of its divisors is an integer number (194915858349).

Almost surely, 2^389831716697 is an apocalyptic number.

It is an amenable number.

389831716697 is a deficient number, since it is larger than the sum of its proper divisors (1).

389831716697 is an equidigital number, since it uses as much as digits as its factorization.

389831716697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 68.

The spelling of 389831716697 in words is "three hundred eighty-nine billion, eight hundred thirty-one million, seven hundred sixteen thousand, six hundred ninety-seven".