1338866 has 4 divisors (see below), whose sum is σ = 2008302. Its totient is φ = 669432.

The previous prime is 1338863. The next prime is 1338871. The reversal of 1338866 is 6688331.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 819025 + 519841 = 905^2 + 721^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 334715 + ... + 334718.

2^1338866 is an apocalyptic number.

1338866 is a deficient number, since it is larger than the sum of its proper divisors (669436).

1338866 is an equidigital number, since it uses as much as digits as its factorization.

1338866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669435.

The product of its digits is 20736, while the sum is 35.

The square root of 1338866 is about 1157.0937732094. The cubic root of 1338866 is about 110.2162687347.

The spelling of 1338866 in words is "one million, three hundred thirty-eight thousand, eight hundred sixty-six".