220829009 has 2 divisors, whose sum is σ = 220829010. Its totient is φ = 220829008.

The previous prime is 220828999. The next prime is 220829017. The reversal of 220829009 is 900928022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220819600 + 9409 = 14860^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 220829009 - 2⁸ = 220828753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220829029) 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, 110414504 + 110414505.

It is an arithmetic number, because the mean of its divisors is an integer number (110414505).

Almost surely, 2^220829009 is an apocalyptic number.

It is an amenable number.

220829009 is a deficient number, since it is larger than the sum of its proper divisors (1).

220829009 is an equidigital number, since it uses as much as digits as its factorization.

220829009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 220829009 is about 14860.3165847838. The cubic root of 220829009 is about 604.4383914747.

The spelling of 220829009 in words is "two hundred twenty million, eight hundred twenty-nine thousand, nine".