389028489 has 8 divisors (see below), whose sum is σ = 518945280. Its totient is φ = 259232016.

The previous prime is 389028487. The next prime is 389028499. The reversal of 389028489 is 984820983.

It is a happy number.

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

It is not a de Polignac number, because 389028489 - 2¹ = 389028487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389028481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22242 + ... + 35675.

It is an arithmetic number, because the mean of its divisors is an integer number (64868160).

Almost surely, 2^389028489 is an apocalyptic number.

It is an amenable number.

389028489 is a deficient number, since it is larger than the sum of its proper divisors (129916791).

389028489 is a wasteful number, since it uses less digits than its factorization.

389028489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60159.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 389028489 is about 19723.8051349125. The cubic root of 389028489 is about 730.0071863933.

The spelling of 389028489 in words is "three hundred eighty-nine million, twenty-eight thousand, four hundred eighty-nine".