389668966697 has 4 divisors (see below), whose sum is σ = 390300521556. Its totient is φ = 389037411840.

The previous prime is 389668966693. The next prime is 389668966703. The reversal of 389668966697 is 796669866983.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120062943001 + 269606023696 = 346501^2 + 519236^2 .

It is a cyclic number.

It is not a de Polignac number, because 389668966697 - 2² = 389668966693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389668966693) 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 in 3 ways as a sum of consecutive naturals, for example, 315776504 + ... + 315777737.

It is an arithmetic number, because the mean of its divisors is an integer number (97575130389).

Almost surely, 2^389668966697 is an apocalyptic number.

It is an amenable number.

389668966697 is a deficient number, since it is larger than the sum of its proper divisors (631554859).

389668966697 is an equidigital number, since it uses as much as digits as its factorization.

389668966697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631554858.

The product of its digits is 7618738176, while the sum is 83.

The spelling of 389668966697 in words is "three hundred eighty-nine billion, six hundred sixty-eight million, nine hundred sixty-six thousand, six hundred ninety-seven".