220404329 has 2 divisors, whose sum is σ = 220404330. Its totient is φ = 220404328.

The previous prime is 220404307. The next prime is 220404347. The reversal of 220404329 is 923404022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 86955625 = 11552^2 + 9325^2 .

It is a cyclic number.

It is not a de Polignac number, because 220404329 - 2⁸ = 220404073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220404298 and 220404307.

It is not a weakly prime, because it can be changed into another prime (220404829) 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, 110202164 + 110202165.

It is an arithmetic number, because the mean of its divisors is an integer number (110202165).

Almost surely, 2^220404329 is an apocalyptic number.

It is an amenable number.

220404329 is a deficient number, since it is larger than the sum of its proper divisors (1).

220404329 is an equidigital number, since it uses as much as digits as its factorization.

220404329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 220404329 is about 14846.0206452773. The cubic root of 220404329 is about 604.0506742640.

The spelling of 220404329 in words is "two hundred twenty million, four hundred four thousand, three hundred twenty-nine".