229218929 has 8 divisors (see below), whose sum is σ = 244773120. Its totient is φ = 214174800.

The previous prime is 229218917. The next prime is 229218937. The reversal of 229218929 is 929812922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 229218929 - 2¹² = 229214833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229218929.

It is not an unprimeable number, because it can be changed into a prime (229218949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126587 + ... + 128384.

It is an arithmetic number, because the mean of its divisors is an integer number (30596640).

Almost surely, 2^229218929 is an apocalyptic number.

229218929 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

229218929 is a deficient number, since it is larger than the sum of its proper divisors (15554191).

229218929 is a wasteful number, since it uses less digits than its factorization.

229218929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255031.

The product of its digits is 93312, while the sum is 44.

The square root of 229218929 is about 15139.9778401423. The cubic root of 229218929 is about 611.9982209426.

The spelling of 229218929 in words is "two hundred twenty-nine million, two hundred eighteen thousand, nine hundred twenty-nine".