223223439989 has 4 divisors (see below), whose sum is σ = 243516480000. Its totient is φ = 202930399980.

The previous prime is 223223439983. The next prime is 223223440003. The reversal of 223223439989 is 989934322322.

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 de Polignac number, because none of the positive numbers 2^k-223223439989 is a prime.

It is a super-3 number, since 3×223223439989³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223223439983) 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, 10146519989 + ... + 10146520010.

It is an arithmetic number, because the mean of its divisors is an integer number (60879120000).

Almost surely, 2^223223439989 is an apocalyptic number.

It is an amenable number.

223223439989 is a deficient number, since it is larger than the sum of its proper divisors (20293040011).

223223439989 is a wasteful number, since it uses less digits than its factorization.

223223439989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20293040010.

The product of its digits is 10077696, while the sum is 56.

The spelling of 223223439989 in words is "two hundred twenty-three billion, two hundred twenty-three million, four hundred thirty-nine thousand, nine hundred eighty-nine".