220407209 has 8 divisors (see below), whose sum is σ = 240827040. Its totient is φ = 200051200.

The previous prime is 220407203. The next prime is 220407211. The reversal of 220407209 is 902704022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220407209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220407203) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8579 + ... + 22680.

It is an arithmetic number, because the mean of its divisors is an integer number (30103380).

Almost surely, 2^220407209 is an apocalyptic number.

It is an amenable number.

220407209 is a deficient number, since it is larger than the sum of its proper divisors (20419831).

220407209 is a wasteful number, since it uses less digits than its factorization.

220407209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31911.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 220407209 is about 14846.1176406494. The cubic root of 220407209 is about 604.0533052746.

The spelling of 220407209 in words is "two hundred twenty million, four hundred seven thousand, two hundred nine".