13338491 has 4 divisors (see below), whose sum is σ = 13345800. Its totient is φ = 13331184.

The previous prime is 13338469. The next prime is 13338499. The reversal of 13338491 is 19483331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13338491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13338499) 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, 1655 + ... + 5423.

It is an arithmetic number, because the mean of its divisors is an integer number (3336450).

Almost surely, 2^13338491 is an apocalyptic number.

13338491 is a deficient number, since it is larger than the sum of its proper divisors (7309).

13338491 is an equidigital number, since it uses as much as digits as its factorization.

13338491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7308.

The product of its digits is 7776, while the sum is 32.

The square root of 13338491 is about 3652.1898910106. The cubic root of 13338491 is about 237.1567918078.

The spelling of 13338491 in words is "thirteen million, three hundred thirty-eight thousand, four hundred ninety-one".