220080809 has 4 divisors (see below), whose sum is σ = 237010116. Its totient is φ = 203151504.

The previous prime is 220080787. The next prime is 220080823. The reversal of 220080809 is 908080022.

220080809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 124099600 + 95981209 = 11140^2 + 9797^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220080809 is a prime.

It is a super-3 number, since 3×220080809³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220080869) 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, 8464634 + ... + 8464659.

It is an arithmetic number, because the mean of its divisors is an integer number (59252529).

Almost surely, 2^220080809 is an apocalyptic number.

It is an amenable number.

220080809 is a deficient number, since it is larger than the sum of its proper divisors (16929307).

220080809 is a wasteful number, since it uses less digits than its factorization.

220080809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929306.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 220080809 is about 14835.1207949245. The cubic root of 220080809 is about 603.7549780619.

The spelling of 220080809 in words is "two hundred twenty million, eighty thousand, eight hundred nine".