1069409969 has 4 divisors (see below), whose sum is σ = 1074838644. Its totient is φ = 1063981296.

The previous prime is 1069409933. The next prime is 1069409993. The reversal of 1069409969 is 9699049601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 680531569 + 388878400 = 26087^2 + 19720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1069409969 - 2¹² = 1069405873 is a prime.

It is a super-2 number, since 2×1069409969² = 2287275363593161922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1069409969.

It is not an unprimeable number, because it can be changed into a prime (1069409569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714042 + ... + 2714435.

It is an arithmetic number, because the mean of its divisors is an integer number (268709661).

Almost surely, 2^1069409969 is an apocalyptic number.

It is an amenable number.

1069409969 is a deficient number, since it is larger than the sum of its proper divisors (5428675).

1069409969 is an equidigital number, since it uses as much as digits as its factorization.

1069409969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428674.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 1069409969 is about 32701.8343369298. The cubic root of 1069409969 is about 1022.6210843708.

The spelling of 1069409969 in words is "one billion, sixty-nine million, four hundred nine thousand, nine hundred sixty-nine".