1383867 has 6 divisors (see below), whose sum is σ = 1998932. Its totient is φ = 922572.

The previous prime is 1383857. The next prime is 1383881. The reversal of 1383867 is 7683831.

It is not a de Polignac number, because 1383867 - 2⁶ = 1383803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383857) 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 5 ways as a sum of consecutive naturals, for example, 76873 + ... + 76890.

2^1383867 is an apocalyptic number.

1383867 is a deficient number, since it is larger than the sum of its proper divisors (615065).

1383867 is a wasteful number, since it uses less digits than its factorization.

1383867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153769 (or 153766 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1383867 is about 1176.3787655343. The cubic root of 1383867 is about 111.4375232312.

Subtracting from 1383867 its sum of digits (36), we obtain a palindrome (1383831).

It can be divided in two parts, 138 and 3867, that added together give a triangular number (4005 = T₈₉).

The spelling of 1383867 in words is "one million, three hundred eighty-three thousand, eight hundred sixty-seven".