13453903 has 4 divisors (see below), whose sum is σ = 13817560. Its totient is φ = 13090248.

The previous prime is 13453901. The next prime is 13453931. The reversal of 13453903 is 30935431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13453903 - 2¹ = 13453901 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 (13453901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181773 + ... + 181846.

It is an arithmetic number, because the mean of its divisors is an integer number (3454390).

Almost surely, 2^13453903 is an apocalyptic number.

13453903 is a deficient number, since it is larger than the sum of its proper divisors (363657).

13453903 is an equidigital number, since it uses as much as digits as its factorization.

13453903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363656.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 13453903 is about 3667.9562429233. The cubic root of 13453903 is about 237.8388323449.

The spelling of 13453903 in words is "thirteen million, four hundred fifty-three thousand, nine hundred three".