389786789 has 8 divisors (see below), whose sum is σ = 445592448. Its totient is φ = 334011600.

The previous prime is 389786779. The next prime is 389786797. The reversal of 389786789 is 987687983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389786789 - 2²⁴ = 373009573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389786759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38144 + ... + 47270.

It is an arithmetic number, because the mean of its divisors is an integer number (55699056).

Almost surely, 2^389786789 is an apocalyptic number.

It is an amenable number.

389786789 is a deficient number, since it is larger than the sum of its proper divisors (55805659).

389786789 is an equidigital number, since it uses as much as digits as its factorization.

389786789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235.

The product of its digits is 36578304, while the sum is 65.

The square root of 389786789 is about 19743.0187408106. The cubic root of 389786789 is about 730.4811920956.

The spelling of 389786789 in words is "three hundred eighty-nine million, seven hundred eighty-six thousand, seven hundred eighty-nine".