1383887 has 4 divisors (see below), whose sum is σ = 1444080. Its totient is φ = 1323696.

The previous prime is 1383881. The next prime is 1383901. The reversal of 1383887 is 7883831.

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

It is a de Polignac number, because none of the positive numbers 2^k-1383887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1383887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383881) 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 3 ways as a sum of consecutive naturals, for example, 30062 + ... + 30107.

It is an arithmetic number, because the mean of its divisors is an integer number (361020).

2^1383887 is an apocalyptic number.

1383887 is a deficient number, since it is larger than the sum of its proper divisors (60193).

1383887 is an equidigital number, since it uses as much as digits as its factorization.

1383887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60192.

The product of its digits is 32256, while the sum is 38.

The square root of 1383887 is about 1176.3872661671. The cubic root of 1383887 is about 111.4380600698.

The spelling of 1383887 in words is "one million, three hundred eighty-three thousand, eight hundred eighty-seven".