223885421 has 4 divisors (see below), whose sum is σ = 224562144. Its totient is φ = 223208700.

The previous prime is 223885399. The next prime is 223885429. The reversal of 223885421 is 124588322.

223885421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 223885421 - 2¹⁸ = 223623277 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 (223885429) 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, 337865 + ... + 338526.

It is an arithmetic number, because the mean of its divisors is an integer number (56140536).

Almost surely, 2^223885421 is an apocalyptic number.

It is an amenable number.

223885421 is a deficient number, since it is larger than the sum of its proper divisors (676723).

223885421 is an equidigital number, since it uses as much as digits as its factorization.

223885421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676722.

The product of its digits is 30720, while the sum is 35.

The square root of 223885421 is about 14962.8012417461. The cubic root of 223885421 is about 607.2142263191.

The spelling of 223885421 in words is "two hundred twenty-three million, eight hundred eighty-five thousand, four hundred twenty-one".