389976101 has 2 divisors, whose sum is σ = 389976102. Its totient is φ = 389976100.

The previous prime is 389976077. The next prime is 389976149. The reversal of 389976101 is 101679983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296872900 + 93103201 = 17230^2 + 9649^2 .

It is an emirp because it is prime and its reverse (101679983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389976101 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389976161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194988050 + 194988051.

It is an arithmetic number, because the mean of its divisors is an integer number (194988051).

Almost surely, 2^389976101 is an apocalyptic number.

It is an amenable number.

389976101 is a deficient number, since it is larger than the sum of its proper divisors (1).

389976101 is an equidigital number, since it uses as much as digits as its factorization.

389976101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 389976101 is about 19747.8125624080. The cubic root of 389976101 is about 730.5994332104.

The spelling of 389976101 in words is "three hundred eighty-nine million, nine hundred seventy-six thousand, one hundred one".