389870711 has 2 divisors, whose sum is σ = 389870712. Its totient is φ = 389870710.

The previous prime is 389870669. The next prime is 389870713. The reversal of 389870711 is 117078983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 389870711 - 2¹⁴ = 389854327 is a prime.

It is a super-3 number, since 3×389870711³ (a number of 27 digits) contains 333 as substring.

Together with 389870713, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389870713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194935355 + 194935356.

It is an arithmetic number, because the mean of its divisors is an integer number (194935356).

Almost surely, 2^389870711 is an apocalyptic number.

389870711 is a deficient number, since it is larger than the sum of its proper divisors (1).

389870711 is an equidigital number, since it uses as much as digits as its factorization.

389870711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 389870711 is about 19745.1439852942. The cubic root of 389870711 is about 730.5336130988.

The spelling of 389870711 in words is "three hundred eighty-nine million, eight hundred seventy thousand, seven hundred eleven".