223239953 has 2 divisors, whose sum is σ = 223239954. Its totient is φ = 223239952.

The previous prime is 223239917. The next prime is 223239983. The reversal of 223239953 is 359932322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205406224 + 17833729 = 14332^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 223239953 - 2⁶ = 223239889 is a prime.

It is a super-3 number, since 3×223239953³ (a number of 26 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (223239983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111619976 + 111619977.

It is an arithmetic number, because the mean of its divisors is an integer number (111619977).

Almost surely, 2^223239953 is an apocalyptic number.

It is an amenable number.

223239953 is a deficient number, since it is larger than the sum of its proper divisors (1).

223239953 is an equidigital number, since it uses as much as digits as its factorization.

223239953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 38.

The square root of 223239953 is about 14941.2165836655. The cubic root of 223239953 is about 606.6301260378.

The spelling of 223239953 in words is "two hundred twenty-three million, two hundred thirty-nine thousand, nine hundred fifty-three".