4394189 has 2 divisors, whose sum is σ = 4394190. Its totient is φ = 4394188.

The previous prime is 4394183. The next prime is 4394191. The reversal of 4394189 is 9814934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2788900 + 1605289 = 1670^2 + 1267^2 .

It is a cyclic number.

It is not a de Polignac number, because 4394189 - 2⁸ = 4393933 is a prime.

Together with 4394191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4394183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2197094 + 2197095.

It is an arithmetic number, because the mean of its divisors is an integer number (2197095).

Almost surely, 2^4394189 is an apocalyptic number.

It is an amenable number.

4394189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4394189 is an equidigital number, since it uses as much as digits as its factorization.

4394189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 4394189 is about 2096.2320959283. The cubic root of 4394189 is about 163.7920848262.

The spelling of 4394189 in words is "four million, three hundred ninety-four thousand, one hundred eighty-nine".