1338689 has 8 divisors (see below), whose sum is σ = 1473120. Its totient is φ = 1206400.

The previous prime is 1338679. The next prime is 1338703. The reversal of 1338689 is 9868331.

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 1338689 - 2⁸ = 1338433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1338679) 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, 977 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (184140).

2^1338689 is an apocalyptic number.

It is an amenable number.

1338689 is a deficient number, since it is larger than the sum of its proper divisors (134431).

1338689 is a wasteful number, since it uses less digits than its factorization.

1338689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071.

The product of its digits is 31104, while the sum is 38.

The square root of 1338689 is about 1157.0172859556. The cubic root of 1338689 is about 110.2114116045.

The spelling of 1338689 in words is "one million, three hundred thirty-eight thousand, six hundred eighty-nine".