389959123 has 2 divisors, whose sum is σ = 389959124. Its totient is φ = 389959122.

The previous prime is 389959121. The next prime is 389959139. The reversal of 389959123 is 321959983.

It is a weak prime.

It is an emirp because it is prime and its reverse (321959983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389959123 - 2¹ = 389959121 is a prime.

It is a super-2 number, since 2×389959123² = 304136235221858258, which contains 22 as substring.

Together with 389959121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (389959121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194979561 + 194979562.

It is an arithmetic number, because the mean of its divisors is an integer number (194979562).

Almost surely, 2^389959123 is an apocalyptic number.

389959123 is a deficient number, since it is larger than the sum of its proper divisors (1).

389959123 is an equidigital number, since it uses as much as digits as its factorization.

389959123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 49.

The square root of 389959123 is about 19747.3826873335. The cubic root of 389959123 is about 730.5888305972.

The spelling of 389959123 in words is "three hundred eighty-nine million, nine hundred fifty-nine thousand, one hundred twenty-three".