229169081 has 4 divisors (see below), whose sum is σ = 236561664. Its totient is φ = 221776500.

The previous prime is 229169077. The next prime is 229169141. The reversal of 229169081 is 180961922.

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: 180961922 = 2 ⋅90480961.

It is a cyclic number.

It is not a de Polignac number, because 229169081 - 2² = 229169077 is a prime.

It is a super-2 number, since 2×229169081² = 105036935372769122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229169021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3696245 + ... + 3696306.

It is an arithmetic number, because the mean of its divisors is an integer number (59140416).

Almost surely, 2^229169081 is an apocalyptic number.

It is an amenable number.

229169081 is a deficient number, since it is larger than the sum of its proper divisors (7392583).

229169081 is an equidigital number, since it uses as much as digits as its factorization.

229169081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7392582.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 229169081 is about 15138.3315130829. The cubic root of 229169081 is about 611.9538541893.

The spelling of 229169081 in words is "two hundred twenty-nine million, one hundred sixty-nine thousand, eighty-one".