4189009 has 4 divisors (see below), whose sum is σ = 4569840. Its totient is φ = 3808180.

The previous prime is 4189001. The next prime is 4189019. The reversal of 4189009 is 9009814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4189009 - 2³ = 4189001 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4189001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190399 + ... + 190420.

It is an arithmetic number, because the mean of its divisors is an integer number (1142460).

Almost surely, 2^4189009 is an apocalyptic number.

It is an amenable number.

4189009 is a deficient number, since it is larger than the sum of its proper divisors (380831).

4189009 is a wasteful number, since it uses less digits than its factorization.

4189009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380830.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 4189009 is about 2046.7068671405. The cubic root of 4189009 is about 161.2020020194.

The spelling of 4189009 in words is "four million, one hundred eighty-nine thousand, nine".