4186489 has 2 divisors, whose sum is σ = 4186490. Its totient is φ = 4186488.

The previous prime is 4186487. The next prime is 4186493. The reversal of 4186489 is 9846814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4020025 + 166464 = 2005^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 4186489 - 2¹ = 4186487 is a prime.

Together with 4186487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4186487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2093244 + 2093245.

It is an arithmetic number, because the mean of its divisors is an integer number (2093245).

Almost surely, 2^4186489 is an apocalyptic number.

It is an amenable number.

4186489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4186489 is an equidigital number, since it uses as much as digits as its factorization.

4186489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 40.

The square root of 4186489 is about 2046.0911514397. The cubic root of 4186489 is about 161.1696705434.

The spelling of 4186489 in words is "four million, one hundred eighty-six thousand, four hundred eighty-nine".