13705849 has 4 divisors (see below), whose sum is σ = 14040180. Its totient is φ = 13371520.

The previous prime is 13705847. The next prime is 13705889. The reversal of 13705849 is 94850731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 310249 + 13395600 = 557^2 + 3660^2 .

It is a cyclic number.

It is not a de Polignac number, because 13705849 - 2¹ = 13705847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13705841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167104 + ... + 167185.

It is an arithmetic number, because the mean of its divisors is an integer number (3510045).

Almost surely, 2^13705849 is an apocalyptic number.

It is an amenable number.

13705849 is a deficient number, since it is larger than the sum of its proper divisors (334331).

13705849 is an equidigital number, since it uses as much as digits as its factorization.

13705849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334330.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 13705849 is about 3702.1411372340. The cubic root of 13705849 is about 239.3142985425.

The spelling of 13705849 in words is "thirteen million, seven hundred five thousand, eight hundred forty-nine".