1076090809 has 4 divisors (see below), whose sum is σ = 1076320116. Its totient is φ = 1075861504.

The previous prime is 1076090773. The next prime is 1076090831. The reversal of 1076090809 is 9080906701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9080906701 = 457 ⋅19870693.

It can be written as a sum of positive squares in 2 ways, for example, as 1011240000 + 64850809 = 31800^2 + 8053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1076090809 - 2⁷ = 1076090681 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1076090209) 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, 107464 + ... + 117049.

It is an arithmetic number, because the mean of its divisors is an integer number (269080029).

Almost surely, 2^1076090809 is an apocalyptic number.

It is an amenable number.

1076090809 is a deficient number, since it is larger than the sum of its proper divisors (229307).

1076090809 is an equidigital number, since it uses as much as digits as its factorization.

1076090809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229306.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1076090809 is about 32803.8230851223. The cubic root of 1076090809 is about 1024.7461783567.

The spelling of 1076090809 in words is "one billion, seventy-six million, ninety thousand, eight hundred nine".