229509073 has 2 divisors, whose sum is σ = 229509074. Its totient is φ = 229509072.

The previous prime is 229509047. The next prime is 229509079. The reversal of 229509073 is 370905922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223442704 + 6066369 = 14948^2 + 2463^2 .

It is a cyclic number.

It is not a de Polignac number, because 229509073 - 2⁵ = 229509041 is a prime.

It is not a weakly prime, because it can be changed into another prime (229509079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114754536 + 114754537.

It is an arithmetic number, because the mean of its divisors is an integer number (114754537).

Almost surely, 2^229509073 is an apocalyptic number.

It is an amenable number.

229509073 is a deficient number, since it is larger than the sum of its proper divisors (1).

229509073 is an equidigital number, since it uses as much as digits as its factorization.

229509073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 229509073 is about 15149.5568582055. The cubic root of 229509073 is about 612.2563333418.

It can be divided in two parts, 22950 and 9073, that added together give a palindrome (32023).

The spelling of 229509073 in words is "two hundred twenty-nine million, five hundred nine thousand, seventy-three".