1729229 has 2 divisors, whose sum is σ = 1729230. Its totient is φ = 1729228.

The previous prime is 1729207. The next prime is 1729237. The reversal of 1729229 is 9229271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1729225 + 4 = 1315^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 1729229 - 2¹² = 1725133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1729195 and 1729204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1729249) 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, 864614 + 864615.

It is an arithmetic number, because the mean of its divisors is an integer number (864615).

2^1729229 is an apocalyptic number.

It is an amenable number.

1729229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1729229 is an equidigital number, since it uses as much as digits as its factorization.

1729229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 1729229 is about 1315.0015209117. The cubic root of 1729229 is about 120.0284423322.

The spelling of 1729229 in words is "one million, seven hundred twenty-nine thousand, two hundred twenty-nine".