4205965249 has 4 divisors (see below), whose sum is σ = 4224016836. Its totient is φ = 4187913664.

The previous prime is 4205965213. The next prime is 4205965261. The reversal of 4205965249 is 9425695024.

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 1403851024 + 2802114225 = 37468^2 + 52935^2 .

It is a cyclic number.

It is not a de Polignac number, because 4205965249 - 2¹⁷ = 4205834177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4205965199 and 4205965208.

It is not an unprimeable number, because it can be changed into a prime (4205965549) 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, 9025444 + ... + 9025909.

It is an arithmetic number, because the mean of its divisors is an integer number (1056004209).

Almost surely, 2^4205965249 is an apocalyptic number.

It is an amenable number.

4205965249 is a deficient number, since it is larger than the sum of its proper divisors (18051587).

4205965249 is a wasteful number, since it uses less digits than its factorization.

4205965249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18051586.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 4205965249 is about 64853.4135493268. The cubic root of 4205965249 is about 1614.1921341719.

The spelling of 4205965249 in words is "four billion, two hundred five million, nine hundred sixty-five thousand, two hundred forty-nine".