1003887 has 8 divisors (see below), whose sum is σ = 1487280. Its totient is φ = 669240.

The previous prime is 1003879. The next prime is 1003889. The reversal of 1003887 is 7883001.

It is not a de Polignac number, because 1003887 - 2³ = 1003879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 37181 = 1003887 / (1 + 0 + 0 + 3 + 8 + 8 + 7).

1003887 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18564 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (185910).

2^1003887 is an apocalyptic number.

1003887 is a deficient number, since it is larger than the sum of its proper divisors (483393).

1003887 is an equidigital number, since it uses as much as digits as its factorization.

1003887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37190 (or 37184 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1003887 is about 1001.9416150655. The cubic root of 1003887 is about 100.1293991530.

Adding to 1003887 its reverse (7883001), we get a palindrome (8886888).

The spelling of 1003887 in words is "one million, three thousand, eight hundred eighty-seven".