1338993 has 12 divisors (see below), whose sum is σ = 1986868. Its totient is φ = 868320.

The previous prime is 1338979. The next prime is 1339001. The reversal of 1338993 is 3998331.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 725904 = 783^2 + 852^2 .

It is not a de Polignac number, because 1338993 - 2⁸ = 1338737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1678 + ... + 2343.

2^1338993 is an apocalyptic number.

It is an amenable number.

1338993 is a deficient number, since it is larger than the sum of its proper divisors (647875).

1338993 is a wasteful number, since it uses less digits than its factorization.

1338993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4061 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 1338993 is about 1157.1486507791. The cubic root of 1338993 is about 110.2197535304.

The spelling of 1338993 in words is "one million, three hundred thirty-eight thousand, nine hundred ninety-three".