4206646909 has 4 divisors (see below), whose sum is σ = 4213509916. Its totient is φ = 4199783904.

The previous prime is 4206646903. The next prime is 4206646921. The reversal of 4206646909 is 9096466024.

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 1440202500 + 2766444409 = 37950^2 + 52597^2 .

It is a cyclic number.

It is not a de Polignac number, because 4206646909 - 2³ = 4206646901 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 (4206646901) 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, 3430584 + ... + 3431809.

It is an arithmetic number, because the mean of its divisors is an integer number (1053377479).

Almost surely, 2^4206646909 is an apocalyptic number.

It is an amenable number.

4206646909 is a deficient number, since it is larger than the sum of its proper divisors (6863007).

4206646909 is an equidigital number, since it uses as much as digits as its factorization.

4206646909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863006.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 4206646909 is about 64858.6687267014. The cubic root of 4206646909 is about 1614.2793334002.

The spelling of 4206646909 in words is "four billion, two hundred six million, six hundred forty-six thousand, nine hundred nine".