4193689 has 4 divisors (see below), whose sum is σ = 4262500. Its totient is φ = 4124880.

The previous prime is 4193663. The next prime is 4193701. The reversal of 4193689 is 9863914.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9863914 = 2 ⋅4931957.

It can be written as a sum of positive squares in 2 ways, for example, as 225625 + 3968064 = 475^2 + 1992^2 .

It is a cyclic number.

It is not a de Polignac number, because 4193689 - 2¹¹ = 4191641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4193089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34314 + ... + 34435.

It is an arithmetic number, because the mean of its divisors is an integer number (1065625).

Almost surely, 2^4193689 is an apocalyptic number.

It is an amenable number.

4193689 is a deficient number, since it is larger than the sum of its proper divisors (68811).

4193689 is an equidigital number, since it uses as much as digits as its factorization.

4193689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68810.

The product of its digits is 46656, while the sum is 40.

The square root of 4193689 is about 2047.8498480113. The cubic root of 4193689 is about 161.2620118048.

It can be divided in two parts, 41936 and 89, that added together give a square (42025 = 205²).

The spelling of 4193689 in words is "four million, one hundred ninety-three thousand, six hundred eighty-nine".