13408393 has 8 divisors (see below), whose sum is σ = 14581512. Its totient is φ = 12278016.

The previous prime is 13408331. The next prime is 13408397. The reversal of 13408393 is 39380431.

It can be written as a sum of positive squares in 4 ways, for example, as 11209104 + 2199289 = 3348^2 + 1483^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13408393 - 2²¹ = 11311241 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13408397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10030 + ... + 11287.

It is an arithmetic number, because the mean of its divisors is an integer number (1822689).

Almost surely, 2^13408393 is an apocalyptic number.

It is an amenable number.

13408393 is a deficient number, since it is larger than the sum of its proper divisors (1173119).

13408393 is a wasteful number, since it uses less digits than its factorization.

13408393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21371.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 13408393 is about 3661.7472605301. The cubic root of 13408393 is about 237.5703533035.

The spelling of 13408393 in words is "thirteen million, four hundred eight thousand, three hundred ninety-three".