10809811 has 2 divisors, whose sum is σ = 10809812. Its totient is φ = 10809810.

The previous prime is 10809791. The next prime is 10809823. The reversal of 10809811 is 11890801.

10809811 = T₂₆₈₃ + T₂₆₈₄ + T₂₆₈₅.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10809811 - 2⁷ = 10809683 is a prime.

It is equal to p₇₁₄₇₆₃ and since 10809811 and 714763 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10809811.

It is not a weakly prime, because it can be changed into another prime (10809881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5404905 + 5404906.

It is an arithmetic number, because the mean of its divisors is an integer number (5404906).

Almost surely, 2^10809811 is an apocalyptic number.

10809811 is the 2685-th centered triangular number.

10809811 is a deficient number, since it is larger than the sum of its proper divisors (1).

10809811 is an equidigital number, since it uses as much as digits as its factorization.

10809811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 10809811 is about 3287.8277022983. The cubic root of 10809811 is about 221.1088030551.

The spelling of 10809811 in words is "ten million, eight hundred nine thousand, eight hundred eleven".