389666548 has 12 divisors (see below), whose sum is σ = 682218180. Its totient is φ = 194747072.

The previous prime is 389666539. The next prime is 389666561. The reversal of 389666548 is 845666983.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50296464 + 339370084 = 7092^2 + 18422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10783 + ... + 29926.

It is an arithmetic number, because the mean of its divisors is an integer number (56851515).

Almost surely, 2^389666548 is an apocalyptic number.

It is an amenable number.

389666548 is a deficient number, since it is larger than the sum of its proper divisors (292551632).

389666548 is a wasteful number, since it uses less digits than its factorization.

389666548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43106 (or 43104 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The square root of 389666548 is about 19739.9733535788. The cubic root of 389666548 is about 730.4060716924.

The spelling of 389666548 in words is "three hundred eighty-nine million, six hundred sixty-six thousand, five hundred forty-eight".