13378403 has 2 divisors, whose sum is σ = 13378404. Its totient is φ = 13378402.

The previous prime is 13378399. The next prime is 13378429. The reversal of 13378403 is 30487331.

13378403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13378403 - 2² = 13378399 is a prime.

It is not a weakly prime, because it can be changed into another prime (13378003) 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 as a sum of consecutive naturals, namely, 6689201 + 6689202.

It is an arithmetic number, because the mean of its divisors is an integer number (6689202).

Almost surely, 2^13378403 is an apocalyptic number.

13378403 is a deficient number, since it is larger than the sum of its proper divisors (1).

13378403 is an equidigital number, since it uses as much as digits as its factorization.

13378403 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13378403 is about 3657.6499285744. The cubic root of 13378403 is about 237.3930998132.

The spelling of 13378403 in words is "thirteen million, three hundred seventy-eight thousand, four hundred three".