223688489 has 4 divisors (see below), whose sum is σ = 224417424. Its totient is φ = 222959556.

The previous prime is 223688441. The next prime is 223688503. The reversal of 223688489 is 984886322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 223688489 - 2²⁰ = 222639913 is a prime.

It is a super-2 number, since 2×223688489² = 100073080222206242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223688089) 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, 364007 + ... + 364620.

It is an arithmetic number, because the mean of its divisors is an integer number (56104356).

Almost surely, 2^223688489 is an apocalyptic number.

It is an amenable number.

223688489 is a deficient number, since it is larger than the sum of its proper divisors (728935).

223688489 is an equidigital number, since it uses as much as digits as its factorization.

223688489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728934.

The product of its digits is 1327104, while the sum is 50.

The square root of 223688489 is about 14956.2190743516. The cubic root of 223688489 is about 607.0361367263.

The spelling of 223688489 in words is "two hundred twenty-three million, six hundred eighty-eight thousand, four hundred eighty-nine".