1069387709 has 4 divisors (see below), whose sum is σ = 1151648316. Its totient is φ = 987127104.

The previous prime is 1069387699. The next prime is 1069387733. The reversal of 1069387709 is 9077839601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9077839601 = 4567 ⋅1987703.

It can be written as a sum of positive squares in 2 ways, for example, as 366607609 + 702780100 = 19147^2 + 26510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1069387709 - 2¹⁶ = 1069322173 is a prime.

It is a super-2 number, since 2×1069387709² = 2287180144320537362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1069387009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41130284 + ... + 41130309.

It is an arithmetic number, because the mean of its divisors is an integer number (287912079).

Almost surely, 2^1069387709 is an apocalyptic number.

It is an amenable number.

1069387709 is a deficient number, since it is larger than the sum of its proper divisors (82260607).

1069387709 is an equidigital number, since it uses as much as digits as its factorization.

1069387709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82260606.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 1069387709 is about 32701.4939872783. The cubic root of 1069387709 is about 1022.6139889618.

The spelling of 1069387709 in words is "one billion, sixty-nine million, three hundred eighty-seven thousand, seven hundred nine".