229872529 has 4 divisors (see below), whose sum is σ = 230209776. Its totient is φ = 229535284.

The previous prime is 229872497. The next prime is 229872551. The reversal of 229872529 is 925278922.

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, and also an emirpimes, since its reverse is a distinct semiprime: 925278922 = 2 ⋅462639461.

It is a cyclic number.

It is not a de Polignac number, because 229872529 - 2⁵ = 229872497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229872569) 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, 167599 + ... + 168964.

It is an arithmetic number, because the mean of its divisors is an integer number (57552444).

Almost surely, 2^229872529 is an apocalyptic number.

It is an amenable number.

229872529 is a deficient number, since it is larger than the sum of its proper divisors (337247).

229872529 is an equidigital number, since it uses as much as digits as its factorization.

229872529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337246.

The product of its digits is 362880, while the sum is 46.

The square root of 229872529 is about 15161.5477112332. The cubic root of 229872529 is about 612.5793574257.

The spelling of 229872529 in words is "two hundred twenty-nine million, eight hundred seventy-two thousand, five hundred twenty-nine".