12833809 has 4 divisors (see below), whose sum is σ = 12884004. Its totient is φ = 12783616.

The previous prime is 12833789. The next prime is 12833869. The reversal of 12833809 is 90833821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8643600 + 4190209 = 2940^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 12833809 - 2²¹ = 10736657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12833869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24712 + ... + 25225.

It is an arithmetic number, because the mean of its divisors is an integer number (3221001).

Almost surely, 2^12833809 is an apocalyptic number.

It is an amenable number.

12833809 is a deficient number, since it is larger than the sum of its proper divisors (50195).

12833809 is an equidigital number, since it uses as much as digits as its factorization.

12833809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50194.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 12833809 is about 3582.4305994674. The cubic root of 12833809 is about 234.1271923993.

The spelling of 12833809 in words is "twelve million, eight hundred thirty-three thousand, eight hundred nine".