11634809 has 2 divisors, whose sum is σ = 11634810. Its totient is φ = 11634808.

The previous prime is 11634797. The next prime is 11634839. The reversal of 11634809 is 90843611.

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., 9241600 + 2393209 = 3040^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 11634809 - 2⁴ = 11634793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11634839) 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, 5817404 + 5817405.

It is an arithmetic number, because the mean of its divisors is an integer number (5817405).

Almost surely, 2^11634809 is an apocalyptic number.

It is an amenable number.

11634809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11634809 is an equidigital number, since it uses as much as digits as its factorization.

11634809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 11634809 is about 3410.9835824876. The cubic root of 11634809 is about 226.5964418653.

The spelling of 11634809 in words is "eleven million, six hundred thirty-four thousand, eight hundred nine".