4190689 has 2 divisors, whose sum is σ = 4190690. Its totient is φ = 4190688.

The previous prime is 4190677. The next prime is 4190699. The reversal of 4190689 is 9860914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4133089 + 57600 = 2033^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 4190689 - 2²¹ = 2093537 is a prime.

It is an Ulam number.

4190689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4190629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2095344 + 2095345.

It is an arithmetic number, because the mean of its divisors is an integer number (2095345).

Almost surely, 2^4190689 is an apocalyptic number.

It is an amenable number.

4190689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4190689 is an equidigital number, since it uses as much as digits as its factorization.

4190689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 4190689 is about 2047.1172413909. The cubic root of 4190689 is about 161.2235491337.

The spelling of 4190689 in words is "four million, one hundred ninety thousand, six hundred eighty-nine".