13729249 has 4 divisors (see below), whose sum is σ = 14172160. Its totient is φ = 13286340.

The previous prime is 13729223. The next prime is 13729291. The reversal of 13729249 is 94292731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13729249 - 2¹¹ = 13727201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13729049) 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, 221409 + ... + 221470.

It is an arithmetic number, because the mean of its divisors is an integer number (3543040).

Almost surely, 2^13729249 is an apocalyptic number.

It is an amenable number.

13729249 is a deficient number, since it is larger than the sum of its proper divisors (442911).

13729249 is an equidigital number, since it uses as much as digits as its factorization.

13729249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442910.

The product of its digits is 27216, while the sum is 37.

The square root of 13729249 is about 3705.3001227971. The cubic root of 13729249 is about 239.4504148986.

The spelling of 13729249 in words is "thirteen million, seven hundred twenty-nine thousand, two hundred forty-nine".