387855 has 48 divisors (see below), whose sum is σ = 790560. Its totient is φ = 179712.

The previous prime is 387853. The next prime is 387857. The reversal of 387855 is 558783.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (387853) and next prime (387857).

It is not a de Polignac number, because 387855 - 2¹ = 387853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387853) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22807 + ... + 22823.

It is an arithmetic number, because the mean of its divisors is an integer number (16470).

2³⁸⁷⁸⁵⁵ is an apocalyptic number.

387855 is an abundant number, since it is smaller than the sum of its proper divisors (402705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387855 is a wasteful number, since it uses less digits than its factorization.

387855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57 (or 38 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 387855 is about 622.7800574842. The cubic root of 387855 is about 72.9272434544.

The spelling of 387855 in words is "three hundred eighty-seven thousand, eight hundred fifty-five".