4145209 has 8 divisors (see below), whose sum is σ = 4239360. Its totient is φ = 4052256.

The previous prime is 4145201. The next prime is 4145213. The reversal of 4145209 is 9025414.

4145209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4145209 - 2³ = 4145201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4145201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10632 + ... + 11014.

It is an arithmetic number, because the mean of its divisors is an integer number (529920).

Almost surely, 2^4145209 is an apocalyptic number.

It is an amenable number.

4145209 is a deficient number, since it is larger than the sum of its proper divisors (94151).

4145209 is a wasteful number, since it uses less digits than its factorization.

4145209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 4145209 is about 2035.9786344655. The cubic root of 4145209 is about 160.6381932367.

The spelling of 4145209 in words is "four million, one hundred forty-five thousand, two hundred nine".