223294993 has 2 divisors, whose sum is σ = 223294994. Its totient is φ = 223294992.

The previous prime is 223294991. The next prime is 223294997. The reversal of 223294993 is 399492322.

223294993 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., 222248464 + 1046529 = 14908^2 + 1023^2 .

It is a cyclic number.

It is not a de Polignac number, because 223294993 - 2¹ = 223294991 is a prime.

Together with 223294991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (223294991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111647496 + 111647497.

It is an arithmetic number, because the mean of its divisors is an integer number (111647497).

Almost surely, 2^223294993 is an apocalyptic number.

It is an amenable number.

223294993 is a deficient number, since it is larger than the sum of its proper divisors (1).

223294993 is an equidigital number, since it uses as much as digits as its factorization.

223294993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 43.

The square root of 223294993 is about 14943.0583549687. The cubic root of 223294993 is about 606.6799769987.

The spelling of 223294993 in words is "two hundred twenty-three million, two hundred ninety-four thousand, nine hundred ninety-three".