13388791 has 4 divisors (see below), whose sum is σ = 14418712. Its totient is φ = 12358872.

The previous prime is 13388779. The next prime is 13388801. The reversal of 13388791 is 19788331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19788331 = 167 ⋅118493.

It is a cyclic number.

It is not a de Polignac number, because 13388791 - 2¹³ = 13380599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13388761) 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, 514941 + ... + 514966.

It is an arithmetic number, because the mean of its divisors is an integer number (3604678).

Almost surely, 2^13388791 is an apocalyptic number.

13388791 is a deficient number, since it is larger than the sum of its proper divisors (1029921).

13388791 is a wasteful number, since it uses less digits than its factorization.

13388791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029920.

The product of its digits is 36288, while the sum is 40.

The square root of 13388791 is about 3659.0696905088. The cubic root of 13388791 is about 237.4545272129.

The spelling of 13388791 in words is "thirteen million, three hundred eighty-eight thousand, seven hundred ninety-one".