12059809 has 2 divisors, whose sum is σ = 12059810. Its totient is φ = 12059808.

The previous prime is 12059807. The next prime is 12059833. The reversal of 12059809 is 90895021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11971600 + 88209 = 3460^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 12059809 - 2¹ = 12059807 is a prime.

Together with 12059807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12059807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6029904 + 6029905.

It is an arithmetic number, because the mean of its divisors is an integer number (6029905).

Almost surely, 2^12059809 is an apocalyptic number.

It is an amenable number.

12059809 is a deficient number, since it is larger than the sum of its proper divisors (1).

12059809 is an equidigital number, since it uses as much as digits as its factorization.

12059809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 12059809 is about 3472.7235709166. The cubic root of 12059809 is about 229.3225750899.

The spelling of 12059809 in words is "twelve million, fifty-nine thousand, eight hundred nine".