229573129 has 4 divisors (see below), whose sum is σ = 229609620. Its totient is φ = 229536640.

The previous prime is 229573121. The next prime is 229573133. The reversal of 229573129 is 921375922.

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 112933129 + 116640000 = 10627^2 + 10800^2 .

It is a cyclic number.

It is not a de Polignac number, because 229573129 - 2³ = 229573121 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 229573091 and 229573100.

It is not an unprimeable number, because it can be changed into a prime (229573121) 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, 6124 + ... + 22285.

It is an arithmetic number, because the mean of its divisors is an integer number (57402405).

Almost surely, 2^229573129 is an apocalyptic number.

It is an amenable number.

229573129 is a deficient number, since it is larger than the sum of its proper divisors (36491).

229573129 is an equidigital number, since it uses as much as digits as its factorization.

229573129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36490.

The product of its digits is 68040, while the sum is 40.

The square root of 229573129 is about 15151.6708319578. The cubic root of 229573129 is about 612.3132883067.

The spelling of 229573129 in words is "two hundred twenty-nine million, five hundred seventy-three thousand, one hundred twenty-nine".