223441979 has 2 divisors, whose sum is σ = 223441980. Its totient is φ = 223441978.

The previous prime is 223441969. The next prime is 223441991. The reversal of 223441979 is 979144322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223441979 is a prime.

It is not a weakly prime, because it can be changed into another prime (223441949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111720989 + 111720990.

It is an arithmetic number, because the mean of its divisors is an integer number (111720990).

Almost surely, 2^223441979 is an apocalyptic number.

223441979 is a deficient number, since it is larger than the sum of its proper divisors (1).

223441979 is an equidigital number, since it uses as much as digits as its factorization.

223441979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 223441979 is about 14947.9757492444. The cubic root of 223441979 is about 606.8130653745.

The spelling of 223441979 in words is "two hundred twenty-three million, four hundred forty-one thousand, nine hundred seventy-nine".