381887 has 8 divisors (see below), whose sum is σ = 421200. Its totient is φ = 343360.

The previous prime is 381859. The next prime is 381911. The reversal of 381887 is 788183.

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 381887 - 2⁸ = 381631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381817) 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, 1523 + ... + 1755.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2³⁸¹⁸⁸⁷ is an apocalyptic number.

381887 is a deficient number, since it is larger than the sum of its proper divisors (39313).

381887 is a wasteful number, since it uses less digits than its factorization.

381887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its digits is 10752, while the sum is 35.

The square root of 381887 is about 617.9700639999. The cubic root of 381887 is about 72.5512598252.

The spelling of 381887 in words is "three hundred eighty-one thousand, eight hundred eighty-seven".