13338993 has 4 divisors (see below), whose sum is σ = 17785328. Its totient is φ = 8892660.

The previous prime is 13338991. The next prime is 13339009. The reversal of 13338993 is 39983331.

It is a happy number.

13338993 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39983331 = 3 ⋅13327777.

It is not a de Polignac number, because 13338993 - 2¹ = 13338991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13338991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2223163 + ... + 2223168.

It is an arithmetic number, because the mean of its divisors is an integer number (4446332).

Almost surely, 2^13338993 is an apocalyptic number.

It is an amenable number.

13338993 is a deficient number, since it is larger than the sum of its proper divisors (4446335).

13338993 is an equidigital number, since it uses as much as digits as its factorization.

13338993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446334.

The product of its digits is 52488, while the sum is 39.

The square root of 13338993 is about 3652.2586162538. The cubic root of 13338993 is about 237.1597669373.

The spelling of 13338993 in words is "thirteen million, three hundred thirty-eight thousand, nine hundred ninety-three".