223942969 has 2 divisors, whose sum is σ = 223942970. Its totient is φ = 223942968.

The previous prime is 223942963. The next prime is 223942997. The reversal of 223942969 is 969249322.

223942969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117440569 + 106502400 = 10837^2 + 10320^2 .

It is a cyclic number.

It is not a de Polignac number, because 223942969 - 2⁹ = 223942457 is a prime.

It is a super-2 number, since 2×223942969² = 100300906729069922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (223942963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111971484 + 111971485.

It is an arithmetic number, because the mean of its divisors is an integer number (111971485).

Almost surely, 2^223942969 is an apocalyptic number.

It is an amenable number.

223942969 is a deficient number, since it is larger than the sum of its proper divisors (1).

223942969 is an equidigital number, since it uses as much as digits as its factorization.

223942969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 46.

The square root of 223942969 is about 14964.7241538225. The cubic root of 223942969 is about 607.2662484212.

The spelling of 223942969 in words is "two hundred twenty-three million, nine hundred forty-two thousand, nine hundred sixty-nine".