220320989 has 8 divisors (see below), whose sum is σ = 252046080. Its totient is φ = 188658576.

The previous prime is 220320943. The next prime is 220321009. The reversal of 220320989 is 989023022.

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

It is a cyclic number.

It is not a de Polignac number, because 220320989 - 2²⁰ = 219272413 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 (220320889) 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, 7874 + ... + 22419.

It is an arithmetic number, because the mean of its divisors is an integer number (31505760).

Almost surely, 2^220320989 is an apocalyptic number.

It is an amenable number.

220320989 is a deficient number, since it is larger than the sum of its proper divisors (31725091).

220320989 is a wasteful number, since it uses less digits than its factorization.

220320989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31339.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 220320989 is about 14843.2135671491. The cubic root of 220320989 is about 603.9745294655.

The spelling of 220320989 in words is "two hundred twenty million, three hundred twenty thousand, nine hundred eighty-nine".