229704421 has 2 divisors, whose sum is σ = 229704422. Its totient is φ = 229704420.

The previous prime is 229704413. The next prime is 229704481. The reversal of 229704421 is 124407922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227587396 + 2117025 = 15086^2 + 1455^2 .

It is a cyclic number.

It is not a de Polignac number, because 229704421 - 2³ = 229704413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229704481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114852210 + 114852211.

It is an arithmetic number, because the mean of its divisors is an integer number (114852211).

Almost surely, 2^229704421 is an apocalyptic number.

It is an amenable number.

229704421 is a deficient number, since it is larger than the sum of its proper divisors (1).

229704421 is an equidigital number, since it uses as much as digits as its factorization.

229704421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 229704421 is about 15156.0028041697. The cubic root of 229704421 is about 612.4299926095.

The spelling of 229704421 in words is "two hundred twenty-nine million, seven hundred four thousand, four hundred twenty-one".