12089705 has 4 divisors (see below), whose sum is σ = 14507652. Its totient is φ = 9671760.

The previous prime is 12089687. The next prime is 12089717. The reversal of 12089705 is 50798021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50798021 = 521 ⋅97501.

It can be written as a sum of positive squares in 2 ways, for example, as 9320809 + 2768896 = 3053^2 + 1664^2 .

It is not a de Polignac number, because 12089705 - 2⁶ = 12089641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1208966 + ... + 1208975.

It is an arithmetic number, because the mean of its divisors is an integer number (3626913).

Almost surely, 2^12089705 is an apocalyptic number.

It is an amenable number.

12089705 is a deficient number, since it is larger than the sum of its proper divisors (2417947).

12089705 is an equidigital number, since it uses as much as digits as its factorization.

12089705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417946.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 12089705 is about 3477.0253090825. The cubic root of 12089705 is about 229.5119139190.

The spelling of 12089705 in words is "twelve million, eighty-nine thousand, seven hundred five".