12003689 has 2 divisors, whose sum is σ = 12003690. Its totient is φ = 12003688.

The previous prime is 12003679. The next prime is 12003701. The reversal of 12003689 is 98630021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 5139289 = 2620^2 + 2267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12003689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12003619) 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 as a sum of consecutive naturals, namely, 6001844 + 6001845.

It is an arithmetic number, because the mean of its divisors is an integer number (6001845).

Almost surely, 2^12003689 is an apocalyptic number.

It is an amenable number.

12003689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003689 is an equidigital number, since it uses as much as digits as its factorization.

12003689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12003689 is about 3464.6340355079. The cubic root of 12003689 is about 228.9663063895.

It can be divided in two parts, 1200 and 3689, that multiplied together give a triangular number (4426800 = T₂₉₇₅).

The spelling of 12003689 in words is "twelve million, three thousand, six hundred eighty-nine".