1029409 has 2 divisors, whose sum is σ = 1029410. Its totient is φ = 1029408.

The previous prime is 1029407. The next prime is 1029433. The reversal of 1029409 is 9049201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 567009 + 462400 = 753^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 1029409 - 2¹ = 1029407 is a prime.

Together with 1029407, it forms a pair of twin primes.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (1029403) 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, 514704 + 514705.

It is an arithmetic number, because the mean of its divisors is an integer number (514705).

2^1029409 is an apocalyptic number.

It is an amenable number.

1029409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029409 is an equidigital number, since it uses as much as digits as its factorization.

1029409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1029409 is about 1014.5979499289. The cubic root of 1029409 is about 100.9708441151.

The spelling of 1029409 in words is "one million, twenty-nine thousand, four hundred nine".