224323993 has 4 divisors (see below), whose sum is σ = 237519540. Its totient is φ = 211128448.

The previous prime is 224323969. The next prime is 224324011. The reversal of 224323993 is 399323422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113379904 + 110944089 = 10648^2 + 10533^2 .

It is a cyclic number.

It is not a de Polignac number, because 224323993 - 2¹³ = 224315801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224323943) 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 3 ways as a sum of consecutive naturals, for example, 6597748 + ... + 6597781.

It is an arithmetic number, because the mean of its divisors is an integer number (59379885).

Almost surely, 2^224323993 is an apocalyptic number.

It is an amenable number.

224323993 is a deficient number, since it is larger than the sum of its proper divisors (13195547).

224323993 is a wasteful number, since it uses less digits than its factorization.

224323993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13195546.

The product of its digits is 69984, while the sum is 37.

The square root of 224323993 is about 14977.4494824720. The cubic root of 224323993 is about 607.6104609268.

The spelling of 224323993 in words is "two hundred twenty-four million, three hundred twenty-three thousand, nine hundred ninety-three".