229690369 has 2 divisors, whose sum is σ = 229690370. Its totient is φ = 229690368.

The previous prime is 229690343. The next prime is 229690379. The reversal of 229690369 is 963096922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148474225 + 81216144 = 12185^2 + 9012^2 .

It is a cyclic number.

It is not a de Polignac number, because 229690369 - 2⁵ = 229690337 is a prime.

It is a super-2 number, since 2×229690369² = 105515331222712322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229690379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114845184 + 114845185.

It is an arithmetic number, because the mean of its divisors is an integer number (114845185).

Almost surely, 2^229690369 is an apocalyptic number.

It is an amenable number.

229690369 is a deficient number, since it is larger than the sum of its proper divisors (1).

229690369 is an equidigital number, since it uses as much as digits as its factorization.

229690369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 229690369 is about 15155.5392183848. The cubic root of 229690369 is about 612.4175040358.

It can be divided in two parts, 2296 and 90369, that added together give a triangular number (92665 = T₄₃₀).

The spelling of 229690369 in words is "two hundred twenty-nine million, six hundred ninety thousand, three hundred sixty-nine".