223073993 has 4 divisors (see below), whose sum is σ = 224306628. Its totient is φ = 221841360.

The previous prime is 223073971. The next prime is 223074013. The reversal of 223073993 is 399370322.

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 48622729 + 174451264 = 6973^2 + 13208^2 .

It is a cyclic number.

It is not a de Polignac number, because 223073993 - 2¹² = 223069897 is a prime.

It is a super-3 number, since 3×223073993³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223073933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616046 + ... + 616407.

It is an arithmetic number, because the mean of its divisors is an integer number (56076657).

Almost surely, 2^223073993 is an apocalyptic number.

It is an amenable number.

223073993 is a deficient number, since it is larger than the sum of its proper divisors (1232635).

223073993 is a wasteful number, since it uses less digits than its factorization.

223073993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232634.

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 223073993 is about 14935.6617864760. The cubic root of 223073993 is about 606.4797627288.

The spelling of 223073993 in words is "two hundred twenty-three million, seventy-three thousand, nine hundred ninety-three".