10809913 has 8 divisors (see below), whose sum is σ = 11015048. Its totient is φ = 10606464.

The previous prime is 10809893. The next prime is 10809923. The reversal of 10809913 is 31990801.

10809913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2812329 + 7997584 = 1677^2 + 2828^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10809913 - 2⁵ = 10809881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10809923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27031 + ... + 27427.

It is an arithmetic number, because the mean of its divisors is an integer number (1376881).

Almost surely, 2^10809913 is an apocalyptic number.

It is an amenable number.

10809913 is a deficient number, since it is larger than the sum of its proper divisors (205135).

10809913 is an equidigital number, since it uses as much as digits as its factorization.

10809913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 10809913 is about 3287.8432140234. The cubic root of 10809913 is about 221.1094985045.

The spelling of 10809913 in words is "ten million, eight hundred nine thousand, nine hundred thirteen".