1338805 has 16 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 963648.

The previous prime is 1338803. The next prime is 1338809. The reversal of 1338805 is 5088331.

It is a cyclic number.

It is not a de Polignac number, because 1338805 - 2¹ = 1338803 is a prime.

1338805 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2556 + ... + 3034.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^1338805 is an apocalyptic number.

It is an amenable number.

1338805 is a deficient number, since it is larger than the sum of its proper divisors (435275).

1338805 is a wasteful number, since it uses less digits than its factorization.

1338805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1338805 is about 1157.0674137664. The cubic root of 1338805 is about 110.2145948568.

The spelling of 1338805 in words is "one million, three hundred thirty-eight thousand, eight hundred five".