229220929 has 8 divisors (see below), whose sum is σ = 262399040. Its totient is φ = 196150896.

The previous prime is 229220891. The next prime is 229220941. The reversal of 229220929 is 929022922.

It is a happy number.

It is a Cunningham number, because it is equal to 612³+1.

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 229220929 - 2¹⁵ = 229188161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229220969) 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, 22419 + ... + 31000.

It is an arithmetic number, because the mean of its divisors is an integer number (32799880).

Almost surely, 2^229220929 is an apocalyptic number.

It is an amenable number.

229220929 is a deficient number, since it is larger than the sum of its proper divisors (33178111).

229220929 is an equidigital number, since it uses as much as digits as its factorization.

229220929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54039.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 229220929 is about 15140.0438902931. The cubic root of 229220929 is about 612.0000008900. Note that the first 6 decimals are identical.

It can be divided in two parts, 22922092 and 9, that multiplied together give a triangular number (206298828 = T₂₀₃₁₂).

The spelling of 229220929 in words is "two hundred twenty-nine million, two hundred twenty thousand, nine hundred twenty-nine".