1338865 has 12 divisors (see below), whose sum is σ = 1766772. Its totient is φ = 973280.

The previous prime is 1338863. The next prime is 1338871. The reversal of 1338865 is 5688331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1024144 + 314721 = 1012^2 + 561^2 .

It is not a de Polignac number, because 1338865 - 2¹ = 1338863 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 1338865.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (147231).

2^1338865 is an apocalyptic number.

It is an amenable number.

1338865 is a deficient number, since it is larger than the sum of its proper divisors (427907).

1338865 is a wasteful number, since it uses less digits than its factorization.

1338865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240 (or 2229 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1338865 is about 1157.0933410922. The cubic root of 1338865 is about 110.2162412945.

It can be divided in two parts, 133 and 8865, that added together give a palindrome (8998).

The spelling of 1338865 in words is "one million, three hundred thirty-eight thousand, eight hundred sixty-five".