389551361 has 2 divisors, whose sum is σ = 389551362. Its totient is φ = 389551360.

The previous prime is 389551339. The next prime is 389551387. The reversal of 389551361 is 163155983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352876225 + 36675136 = 18785^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 389551361 - 2⁶ = 389551297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (389551861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194775680 + 194775681.

It is an arithmetic number, because the mean of its divisors is an integer number (194775681).

Almost surely, 2^389551361 is an apocalyptic number.

It is an amenable number.

389551361 is a deficient number, since it is larger than the sum of its proper divisors (1).

389551361 is an equidigital number, since it uses as much as digits as its factorization.

389551361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 41.

The square root of 389551361 is about 19737.0555301443. The cubic root of 389551361 is about 730.3340942748.

The spelling of 389551361 in words is "three hundred eighty-nine million, five hundred fifty-one thousand, three hundred sixty-one".