223228939 has 2 divisors, whose sum is σ = 223228940. Its totient is φ = 223228938.

The previous prime is 223228909. The next prime is 223228981. The reversal of 223228939 is 939822322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223228939 - 2¹³ = 223220747 is a prime.

It is a super-3 number, since 3×223228939³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223228909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111614469 + 111614470.

It is an arithmetic number, because the mean of its divisors is an integer number (111614470).

Almost surely, 2^223228939 is an apocalyptic number.

223228939 is a deficient number, since it is larger than the sum of its proper divisors (1).

223228939 is an equidigital number, since it uses as much as digits as its factorization.

223228939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 223228939 is about 14940.8480013686. The cubic root of 223228939 is about 606.6201494274.

The spelling of 223228939 in words is "two hundred twenty-three million, two hundred twenty-eight thousand, nine hundred thirty-nine".