229143929 has 4 divisors (see below), whose sum is σ = 261878784. Its totient is φ = 196409076.

The previous prime is 229143919. The next prime is 229143931. The reversal of 229143929 is 929341922.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229143929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (229143919) 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, 16367417 + ... + 16367430.

It is an arithmetic number, because the mean of its divisors is an integer number (65469696).

Almost surely, 2^229143929 is an apocalyptic number.

It is an amenable number.

229143929 is a deficient number, since it is larger than the sum of its proper divisors (32734855).

229143929 is an equidigital number, since it uses as much as digits as its factorization.

229143929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32734854.

The product of its digits is 69984, while the sum is 41.

The square root of 229143929 is about 15137.5007514451. The cubic root of 229143929 is about 611.9314654412.

The spelling of 229143929 in words is "two hundred twenty-nine million, one hundred forty-three thousand, nine hundred twenty-nine".