13387403 has 6 divisors (see below), whose sum is σ = 13995324. Its totient is φ = 12804836.

The previous prime is 13387399. The next prime is 13387411. The reversal of 13387403 is 30478331.

13387403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13387403 - 2² = 13387399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13387453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12125 + ... + 13182.

It is an arithmetic number, because the mean of its divisors is an integer number (2332554).

Almost surely, 2^13387403 is an apocalyptic number.

13387403 is a deficient number, since it is larger than the sum of its proper divisors (607921).

13387403 is an equidigital number, since it uses as much as digits as its factorization.

13387403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25353 (or 25330 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 13387403 is about 3658.8800198968. The cubic root of 13387403 is about 237.4463213867.

The spelling of 13387403 in words is "thirteen million, three hundred eighty-seven thousand, four hundred three".