223444813 has 8 divisors (see below), whose sum is σ = 234822368. Its totient is φ = 212348304.

The previous prime is 223444811. The next prime is 223444841. The reversal of 223444813 is 318444322.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223444813 - 2¹ = 223444811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223444811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68631 + ... + 71812.

It is an arithmetic number, because the mean of its divisors is an integer number (29352796).

Almost surely, 2^223444813 is an apocalyptic number.

It is an amenable number.

223444813 is a deficient number, since it is larger than the sum of its proper divisors (11377555).

223444813 is a wasteful number, since it uses less digits than its factorization.

223444813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140523.

The product of its digits is 18432, while the sum is 31.

The square root of 223444813 is about 14948.0705443880. The cubic root of 223444813 is about 606.8156308443.

The spelling of 223444813 in words is "two hundred twenty-three million, four hundred forty-four thousand, eight hundred thirteen".