4209806863 has 6 divisors (see below), whose sum is σ = 4400800544. Its totient is φ = 4026771276.

The previous prime is 4209806857. The next prime is 4209806869. The reversal of 4209806863 is 3686089024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4209806857) and next prime (4209806869).

It is a de Polignac number, because none of the positive numbers 2^k-4209806863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4209806869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3978495 + ... + 3979552.

Almost surely, 2^4209806863 is an apocalyptic number.

4209806863 is a deficient number, since it is larger than the sum of its proper divisors (190993681).

4209806863 is an equidigital number, since it uses as much as digits as its factorization.

4209806863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7958093 (or 7958070 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 4209806863 is about 64883.0244594069. The cubic root of 4209806863 is about 1614.6834376515.

The spelling of 4209806863 in words is "four billion, two hundred nine million, eight hundred six thousand, eight hundred sixty-three".