11795809 has 2 divisors, whose sum is σ = 11795810. Its totient is φ = 11795808.

The previous prime is 11795801. The next prime is 11795857. The reversal of 11795809 is 90859711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7398400 + 4397409 = 2720^2 + 2097^2 .

It is a cyclic number.

It is not a de Polignac number, because 11795809 - 2³ = 11795801 is a prime.

It is a super-2 number, since 2×11795809² = 278282219928962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11795801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5897904 + 5897905.

It is an arithmetic number, because the mean of its divisors is an integer number (5897905).

Almost surely, 2^11795809 is an apocalyptic number.

It is an amenable number.

11795809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11795809 is an equidigital number, since it uses as much as digits as its factorization.

11795809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 11795809 is about 3434.5027296539. The cubic root of 11795809 is about 227.6368552246.

The spelling of 11795809 in words is "eleven million, seven hundred ninety-five thousand, eight hundred nine".