13729403 has 4 divisors (see below), whose sum is σ = 13737768. Its totient is φ = 13721040.

The previous prime is 13729399. The next prime is 13729411. The reversal of 13729403 is 30492731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 30492731 = 1801 ⋅16931.

It is a cyclic number.

It is not a de Polignac number, because 13729403 - 2² = 13729399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13729423) 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, 818 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (3434442).

Almost surely, 2^13729403 is an apocalyptic number.

13729403 is a deficient number, since it is larger than the sum of its proper divisors (8365).

13729403 is an equidigital number, since it uses as much as digits as its factorization.

13729403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 13729403 is about 3705.3209037815. The cubic root of 13729403 is about 239.4513101946.

The spelling of 13729403 in words is "thirteen million, seven hundred twenty-nine thousand, four hundred three".