10385809 has 8 divisors (see below), whose sum is σ = 12037248. Its totient is φ = 8776320.

The previous prime is 10385803. The next prime is 10385813. The reversal of 10385809 is 90858301.

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

It is not a de Polignac number, because 10385809 - 2³ = 10385801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10385801) 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 in 7 ways as a sum of consecutive naturals, for example, 9952 + ... + 10945.

It is an arithmetic number, because the mean of its divisors is an integer number (1504656).

Almost surely, 2^10385809 is an apocalyptic number.

It is an amenable number.

10385809 is a deficient number, since it is larger than the sum of its proper divisors (1651439).

10385809 is an equidigital number, since it uses as much as digits as its factorization.

10385809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20975.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 10385809 is about 3222.7021270977. The cubic root of 10385809 is about 218.1792496488.

The spelling of 10385809 in words is "ten million, three hundred eighty-five thousand, eight hundred nine".