13729849 has 12 divisors (see below), whose sum is σ = 16405284. Its totient is φ = 11448864.

The previous prime is 13729817. The next prime is 13729867. The reversal of 13729849 is 94892731.

It can be written as a sum of positive squares in 2 ways, for example, as 13249600 + 480249 = 3640^2 + 693^2 .

It is not a de Polignac number, because 13729849 - 2⁵ = 13729817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13729889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1974 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (1367107).

Almost surely, 2^13729849 is an apocalyptic number.

It is an amenable number.

13729849 is a deficient number, since it is larger than the sum of its proper divisors (2675435).

13729849 is an equidigital number, since it uses as much as digits as its factorization.

13729849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7624 (or 7617 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 13729849 is about 3705.3810870139. The cubic root of 13729849 is about 239.4539030271.

The spelling of 13729849 in words is "thirteen million, seven hundred twenty-nine thousand, eight hundred forty-nine".