229509047 has 2 divisors, whose sum is σ = 229509048. Its totient is φ = 229509046.

The previous prime is 229509041. The next prime is 229509073. The reversal of 229509047 is 740905922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229509047 - 2¹⁰ = 229508023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 229509047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229509041) 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 as a sum of consecutive naturals, namely, 114754523 + 114754524.

It is an arithmetic number, because the mean of its divisors is an integer number (114754524).

Almost surely, 2^229509047 is an apocalyptic number.

229509047 is a deficient number, since it is larger than the sum of its proper divisors (1).

229509047 is an equidigital number, since it uses as much as digits as its factorization.

229509047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 229509047 is about 15149.5560000945. The cubic root of 229509047 is about 612.2563102219.

The spelling of 229509047 in words is "two hundred twenty-nine million, five hundred nine thousand, forty-seven".