229809101 has 2 divisors, whose sum is σ = 229809102. Its totient is φ = 229809100.

The previous prime is 229809061. The next prime is 229809103. The reversal of 229809101 is 101908922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228040201 + 1768900 = 15101^2 + 1330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229809101 is a prime.

Together with 229809103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229809103) 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 as a sum of consecutive naturals, namely, 114904550 + 114904551.

It is an arithmetic number, because the mean of its divisors is an integer number (114904551).

Almost surely, 2^229809101 is an apocalyptic number.

It is an amenable number.

229809101 is a deficient number, since it is larger than the sum of its proper divisors (1).

229809101 is an equidigital number, since it uses as much as digits as its factorization.

229809101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 229809101 is about 15159.4558279643. The cubic root of 229809101 is about 612.5230098811.

The spelling of 229809101 in words is "two hundred twenty-nine million, eight hundred nine thousand, one hundred one".