223820489 has 2 divisors, whose sum is σ = 223820490. Its totient is φ = 223820488.

The previous prime is 223820483. The next prime is 223820497. The reversal of 223820489 is 984028322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141610000 + 82210489 = 11900^2 + 9067^2 .

It is a cyclic number.

It is not a de Polignac number, because 223820489 - 2¹⁶ = 223754953 is a prime.

It is a super-3 number, since 3×223820489³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (223820483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111910244 + 111910245.

It is an arithmetic number, because the mean of its divisors is an integer number (111910245).

Almost surely, 2^223820489 is an apocalyptic number.

It is an amenable number.

223820489 is a deficient number, since it is larger than the sum of its proper divisors (1).

223820489 is an equidigital number, since it uses as much as digits as its factorization.

223820489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 223820489 is about 14960.6313035246. The cubic root of 223820489 is about 607.1555185417.

The spelling of 223820489 in words is "two hundred twenty-three million, eight hundred twenty thousand, four hundred eighty-nine".