13388403 has 8 divisors (see below), whose sum is σ = 20401408. Its totient is φ = 7650504.

The previous prime is 13388393. The next prime is 13388411. The reversal of 13388403 is 30488331.

13388403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13388403 - 2¹² = 13384307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13388443) 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, 318751 + ... + 318792.

It is an arithmetic number, because the mean of its divisors is an integer number (2550176).

Almost surely, 2^13388403 is an apocalyptic number.

13388403 is a deficient number, since it is larger than the sum of its proper divisors (7013005).

13388403 is an equidigital number, since it uses as much as digits as its factorization.

13388403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637553.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 13388403 is about 3659.0166711837. The cubic root of 13388403 is about 237.4522334223.

The spelling of 13388403 in words is "thirteen million, three hundred eighty-eight thousand, four hundred three".