229927993 has 4 divisors (see below), whose sum is σ = 231962868. Its totient is φ = 227893120.

The previous prime is 229927981. The next prime is 229928021. The reversal of 229927993 is 399729922.

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 14807104 + 215120889 = 3848^2 + 14667^2 .

It is a cyclic number.

It is not a de Polignac number, because 229927993 - 2¹⁷ = 229796921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229927993.

It is not an unprimeable number, because it can be changed into a prime (229927933) 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, 1017268 + ... + 1017493.

It is an arithmetic number, because the mean of its divisors is an integer number (57990717).

Almost surely, 2^229927993 is an apocalyptic number.

It is an amenable number.

229927993 is a deficient number, since it is larger than the sum of its proper divisors (2034875).

229927993 is a wasteful number, since it uses less digits than its factorization.

229927993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034874.

The product of its digits is 1102248, while the sum is 52.

The square root of 229927993 is about 15163.3767017772. The cubic root of 229927993 is about 612.6286214959.

The spelling of 229927993 in words is "two hundred twenty-nine million, nine hundred twenty-seven thousand, nine hundred ninety-three".