387003 has 4 divisors (see below), whose sum is σ = 516008. Its totient is φ = 258000.

The previous prime is 386993. The next prime is 387007. The reversal of 387003 is 300783.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 387003 - 2⁴ = 386987 is a prime.

It is a D-number.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64498 + ... + 64503.

It is an arithmetic number, because the mean of its divisors is an integer number (129002).

2³⁸⁷⁰⁰³ is an apocalyptic number.

387003 is a deficient number, since it is larger than the sum of its proper divisors (129005).

387003 is a wasteful number, since it uses less digits than its factorization.

387003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129004.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 387003 is about 622.0956518093. The cubic root of 387003 is about 72.8738046146.

Adding to 387003 its reverse (300783), we get a palindrome (687786).

The spelling of 387003 in words is "three hundred eighty-seven thousand, three".