10812809 has 8 divisors (see below), whose sum is σ = 12514560. Its totient is φ = 9150336.

The previous prime is 10812797. The next prime is 10812821. The reversal of 10812809 is 90821801.

It is an interprime number because it is at equal distance from previous prime (10812797) and next prime (10812821).

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 10812809 - 2⁴ = 10812793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10812839) 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, 9224 + ... + 10329.

It is an arithmetic number, because the mean of its divisors is an integer number (1564320).

Almost surely, 2^10812809 is an apocalyptic number.

It is an amenable number.

10812809 is a deficient number, since it is larger than the sum of its proper divisors (1701751).

10812809 is an equidigital number, since it uses as much as digits as its factorization.

10812809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19639.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 10812809 is about 3288.2835948257. The cubic root of 10812809 is about 221.1292419854.

The spelling of 10812809 in words is "ten million, eight hundred twelve thousand, eight hundred nine".