223142789 has 2 divisors, whose sum is σ = 223142790. Its totient is φ = 223142788.

The previous prime is 223142771. The next prime is 223142797. The reversal of 223142789 is 987241322.

223142789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203632900 + 19509889 = 14270^2 + 4417^2 .

It is a cyclic number.

It is not a de Polignac number, because 223142789 - 2⁸ = 223142533 is a prime.

It is a super-3 number, since 3×223142789³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223142719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111571394 + 111571395.

It is an arithmetic number, because the mean of its divisors is an integer number (111571395).

Almost surely, 2^223142789 is an apocalyptic number.

It is an amenable number.

223142789 is a deficient number, since it is larger than the sum of its proper divisors (1).

223142789 is an equidigital number, since it uses as much as digits as its factorization.

223142789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 223142789 is about 14937.9646873327. The cubic root of 223142789 is about 606.5421024227.

It can be divided in two parts, 22314 and 2789, that multiplied together give a triangular number (62233746 = T₁₁₁₅₆).

The spelling of 223142789 in words is "two hundred twenty-three million, one hundred forty-two thousand, seven hundred eighty-nine".