220727309 has 8 divisors (see below), whose sum is σ = 241856928. Its totient is φ = 199774960.

The previous prime is 220727239. The next prime is 220727327. The reversal of 220727309 is 903727022.

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

It is not a de Polignac number, because 220727309 - 2²⁰ = 219678733 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 (220727329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41702 + ... + 46695.

It is an arithmetic number, because the mean of its divisors is an integer number (30232116).

Almost surely, 2^220727309 is an apocalyptic number.

It is an amenable number.

220727309 is a deficient number, since it is larger than the sum of its proper divisors (21129619).

220727309 is a wasteful number, since it uses less digits than its factorization.

220727309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88635.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 220727309 is about 14856.8943255312. The cubic root of 220727309 is about 604.3455884145.

The spelling of 220727309 in words is "two hundred twenty million, seven hundred twenty-seven thousand, three hundred nine".