387489 has 8 divisors (see below), whose sum is σ = 519840. Its totient is φ = 256736.

The previous prime is 387463. The next prime is 387493. The reversal of 387489 is 984783.

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 387489 - 2⁹ = 386977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387449) 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, 397 + ... + 965.

It is an arithmetic number, because the mean of its divisors is an integer number (64980).

2³⁸⁷⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

387489 is a deficient number, since it is larger than the sum of its proper divisors (132351).

387489 is a wasteful number, since it uses less digits than its factorization.

387489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 48384, while the sum is 39.

The square root of 387489 is about 622.4861444241. The cubic root of 387489 is about 72.9042969312.

The spelling of 387489 in words is "three hundred eighty-seven thousand, four hundred eighty-nine".