13806403 has 4 divisors (see below), whose sum is σ = 14868448. Its totient is φ = 12744360.

The previous prime is 13806389. The next prime is 13806409. The reversal of 13806403 is 30460831.

13806403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13806403 - 2¹⁷ = 13675331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13806409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531003 + ... + 531028.

It is an arithmetic number, because the mean of its divisors is an integer number (3717112).

Almost surely, 2^13806403 is an apocalyptic number.

13806403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13806403 is a deficient number, since it is larger than the sum of its proper divisors (1062045).

13806403 is a wasteful number, since it uses less digits than its factorization.

13806403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062044.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13806403 is about 3715.6968390868. The cubic root of 13806403 is about 239.8981222692.

The spelling of 13806403 in words is "thirteen million, eight hundred six thousand, four hundred three".