229548509 has 4 divisors (see below), whose sum is σ = 229777020. Its totient is φ = 229320000.

The previous prime is 229548493. The next prime is 229548523. The reversal of 229548509 is 905845922.

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 34164025 + 195384484 = 5845^2 + 13978^2 .

It is a cyclic number.

It is not a de Polignac number, because 229548509 - 2⁴ = 229548493 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 229548509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229548559) 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, 112742 + ... + 114759.

It is an arithmetic number, because the mean of its divisors is an integer number (57444255).

Almost surely, 2^229548509 is an apocalyptic number.

It is an amenable number.

229548509 is a deficient number, since it is larger than the sum of its proper divisors (228511).

229548509 is a wasteful number, since it uses less digits than its factorization.

229548509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228510.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 229548509 is about 15150.8583585221. The cubic root of 229548509 is about 612.2913988516.

The spelling of 229548509 in words is "two hundred twenty-nine million, five hundred forty-eight thousand, five hundred nine".