389820943 has 2 divisors, whose sum is σ = 389820944. Its totient is φ = 389820942.

The previous prime is 389820917. The next prime is 389820947. The reversal of 389820943 is 349028983.

It is a strong prime.

It is an emirp because it is prime and its reverse (349028983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389820943 - 2⁵ = 389820911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389820893 and 389820902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389820947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194910471 + 194910472.

It is an arithmetic number, because the mean of its divisors is an integer number (194910472).

Almost surely, 2^389820943 is an apocalyptic number.

389820943 is a deficient number, since it is larger than the sum of its proper divisors (1).

389820943 is an equidigital number, since it uses as much as digits as its factorization.

389820943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 389820943 is about 19743.8836858405. The cubic root of 389820943 is about 730.5025269438.

The spelling of 389820943 in words is "three hundred eighty-nine million, eight hundred twenty thousand, nine hundred forty-three".