229240509 has 4 divisors (see below), whose sum is σ = 305654016. Its totient is φ = 152827004.

The previous prime is 229240507. The next prime is 229240519. The reversal of 229240509 is 905042922.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 229240509 - 2¹ = 229240507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 229240509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229240507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38206749 + ... + 38206754.

It is an arithmetic number, because the mean of its divisors is an integer number (76413504).

Almost surely, 2^229240509 is an apocalyptic number.

It is an amenable number.

229240509 is a deficient number, since it is larger than the sum of its proper divisors (76413507).

229240509 is an equidigital number, since it uses as much as digits as its factorization.

229240509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76413506.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 229240509 is about 15140.6905060502. The cubic root of 229240509 is about 612.0174260278.

The spelling of 229240509 in words is "two hundred twenty-nine million, two hundred forty thousand, five hundred nine".