387903 has 16 divisors (see below), whose sum is σ = 551936. Its totient is φ = 241920.

The previous prime is 387857. The next prime is 387911. The reversal of 387903 is 309783.

It is not a de Polignac number, because 387903 - 2⁶ = 387839 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

387903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3951 + ... + 4047.

It is an arithmetic number, because the mean of its divisors is an integer number (34496).

2³⁸⁷⁹⁰³ is an apocalyptic number.

387903 is a deficient number, since it is larger than the sum of its proper divisors (164033).

387903 is a wasteful number, since it uses less digits than its factorization.

387903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 387903 is about 622.8185931714. The cubic root of 387903 is about 72.9302517636.

The spelling of 387903 in words is "three hundred eighty-seven thousand, nine hundred three".