223243789 has 2 divisors, whose sum is σ = 223243790. Its totient is φ = 223243788.

The previous prime is 223243759. The next prime is 223243841. The reversal of 223243789 is 987342322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145009764 + 78234025 = 12042^2 + 8845^2 .

It is a cyclic number.

It is not a de Polignac number, because 223243789 - 2⁷ = 223243661 is a prime.

It is a super-3 number, since 3×223243789³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223243759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111621894 + 111621895.

It is an arithmetic number, because the mean of its divisors is an integer number (111621895).

Almost surely, 2^223243789 is an apocalyptic number.

It is an amenable number.

223243789 is a deficient number, since it is larger than the sum of its proper divisors (1).

223243789 is an equidigital number, since it uses as much as digits as its factorization.

223243789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The square root of 223243789 is about 14941.3449528481. The cubic root of 223243789 is about 606.6336006546.

The spelling of 223243789 in words is "two hundred twenty-three million, two hundred forty-three thousand, seven hundred eighty-nine".