229099961 has 2 divisors, whose sum is σ = 229099962. Its totient is φ = 229099960.

The previous prime is 229099919. The next prime is 229099979. The reversal of 229099961 is 169990922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197233936 + 31866025 = 14044^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 229099961 - 2¹⁰ = 229098937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229099991) 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, 114549980 + 114549981.

It is an arithmetic number, because the mean of its divisors is an integer number (114549981).

Almost surely, 2^229099961 is an apocalyptic number.

It is an amenable number.

229099961 is a deficient number, since it is larger than the sum of its proper divisors (1).

229099961 is an equidigital number, since it uses as much as digits as its factorization.

229099961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 229099961 is about 15136.0483944787. The cubic root of 229099961 is about 611.8923239231.

The spelling of 229099961 in words is "two hundred twenty-nine million, ninety-nine thousand, nine hundred sixty-one".