229609143 has 12 divisors (see below), whose sum is σ = 339747408. Its totient is φ = 149339040.

The previous prime is 229609141. The next prime is 229609169. The reversal of 229609143 is 341906922.

229609143 is a `hidden beast` number, since 2 + 2 + 9 + 609 + 1 + 43 = 666.

It is not a de Polignac number, because 229609143 - 2¹ = 229609141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 229609098 and 229609107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229609141) 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 11 ways as a sum of consecutive naturals, for example, 310755 + ... + 311492.

It is an arithmetic number, because the mean of its divisors is an integer number (28312284).

Almost surely, 2^229609143 is an apocalyptic number.

229609143 is a deficient number, since it is larger than the sum of its proper divisors (110138265).

229609143 is a wasteful number, since it uses less digits than its factorization.

229609143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622294 (or 622291 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 229609143 is about 15152.8592351411. The cubic root of 229609143 is about 612.3453052619.

The spelling of 229609143 in words is "two hundred twenty-nine million, six hundred nine thousand, one hundred forty-three".