13965205 has 4 divisors (see below), whose sum is σ = 16758252. Its totient is φ = 11172160.

The previous prime is 13965197. The next prime is 13965229. The reversal of 13965205 is 50256931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50256931 = 1871 ⋅26861.

It can be written as a sum of positive squares in 2 ways, for example, as 5049009 + 8916196 = 2247^2 + 2986^2 .

It is not a de Polignac number, because 13965205 - 2³ = 13965197 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396516 + ... + 1396525.

It is an arithmetic number, because the mean of its divisors is an integer number (4189563).

Almost surely, 2^13965205 is an apocalyptic number.

It is an amenable number.

13965205 is a deficient number, since it is larger than the sum of its proper divisors (2793047).

13965205 is an equidigital number, since it uses as much as digits as its factorization.

13965205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793046.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 13965205 is about 3737.0048166948. The cubic root of 13965205 is about 240.8143919629.

The spelling of 13965205 in words is "thirteen million, nine hundred sixty-five thousand, two hundred five".