220290289 has 2 divisors, whose sum is σ = 220290290. Its totient is φ = 220290288.

The previous prime is 220290283. The next prime is 220290299. The reversal of 220290289 is 982092022.

220290289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156050064 + 64240225 = 12492^2 + 8015^2 .

It is a cyclic number.

It is not a de Polignac number, because 220290289 - 2³ = 220290281 is a prime.

It is a super-2 number, since 2×220290289² = 97055622855407042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220290281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110145144 + 110145145.

It is an arithmetic number, because the mean of its divisors is an integer number (110145145).

Almost surely, 2^220290289 is an apocalyptic number.

It is an amenable number.

220290289 is a deficient number, since it is larger than the sum of its proper divisors (1).

220290289 is an equidigital number, since it uses as much as digits as its factorization.

220290289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 220290289 is about 14842.1793884860. The cubic root of 220290289 is about 603.9464751262.

The spelling of 220290289 in words is "two hundred twenty million, two hundred ninety thousand, two hundred eighty-nine".