389666549 has 8 divisors (see below), whose sum is σ = 392256000. Its totient is φ = 387083200.

The previous prime is 389666539. The next prime is 389666561. The reversal of 389666549 is 945666983.

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 389666549 - 2²⁰ = 388617973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 389666494 and 389666503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389666539) 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 in 7 ways as a sum of consecutive naturals, for example, 259202 + ... + 260700.

It is an arithmetic number, because the mean of its divisors is an integer number (49032000).

Almost surely, 2^389666549 is an apocalyptic number.

It is an amenable number.

389666549 is a deficient number, since it is larger than the sum of its proper divisors (2589451).

389666549 is a wasteful number, since it uses less digits than its factorization.

389666549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051.

The product of its digits is 8398080, while the sum is 56.

The square root of 389666549 is about 19739.9733789081. The cubic root of 389666549 is about 730.4060723173.

The spelling of 389666549 in words is "three hundred eighty-nine million, six hundred sixty-six thousand, five hundred forty-nine".