387009 has 12 divisors (see below), whose sum is σ = 638976. Its totient is φ = 221112.

The previous prime is 387007. The next prime is 387017. The reversal of 387009 is 900783.

It is a happy number.

It is not a de Polignac number, because 387009 - 2¹ = 387007 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (387007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3009 + ... + 3134.

It is an arithmetic number, because the mean of its divisors is an integer number (53248).

2³⁸⁷⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

387009 is a deficient number, since it is larger than the sum of its proper divisors (251967).

387009 is a wasteful number, since it uses less digits than its factorization.

387009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156 (or 6153 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 387009 is about 622.1004742001. The cubic root of 387009 is about 72.8741812186.

Adding to 387009 its product of nonzero digits (1512), we get a triangular number (388521 = T₈₈₁).

The spelling of 387009 in words is "three hundred eighty-seven thousand, nine".