13929403 has 4 divisors (see below), whose sum is σ = 13999600. Its totient is φ = 13859208.

The previous prime is 13929371. The next prime is 13929431. The reversal of 13929403 is 30492931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30492931 = 7 ⋅4356133.

It is a cyclic number.

It is not a de Polignac number, because 13929403 - 2⁵ = 13929371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13929493) 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, 34800 + ... + 35197.

It is an arithmetic number, because the mean of its divisors is an integer number (3499900).

Almost surely, 2^13929403 is an apocalyptic number.

13929403 is a deficient number, since it is larger than the sum of its proper divisors (70197).

13929403 is an equidigital number, since it uses as much as digits as its factorization.

13929403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70196.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 13929403 is about 3732.2115427719. The cubic root of 13929403 is about 240.6084273288.

The spelling of 13929403 in words is "thirteen million, nine hundred twenty-nine thousand, four hundred three".