389823677 has 2 divisors, whose sum is σ = 389823678. Its totient is φ = 389823676.

The previous prime is 389823647. The next prime is 389823689. The reversal of 389823677 is 776328983.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365803876 + 24019801 = 19126^2 + 4901^2 .

It is an emirp because it is prime and its reverse (776328983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389823677 - 2¹⁶ = 389758141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389823647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194911838 + 194911839.

It is an arithmetic number, because the mean of its divisors is an integer number (194911839).

Almost surely, 2^389823677 is an apocalyptic number.

It is an amenable number.

389823677 is a deficient number, since it is larger than the sum of its proper divisors (1).

389823677 is an equidigital number, since it uses as much as digits as its factorization.

389823677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The square root of 389823677 is about 19743.9529223507. The cubic root of 389823677 is about 730.5042347273.

The spelling of 389823677 in words is "three hundred eighty-nine million, eight hundred twenty-three thousand, six hundred seventy-seven".