4240209 has 8 divisors (see below), whose sum is σ = 5705920. Its totient is φ = 2800656.

The previous prime is 4240207. The next prime is 4240217. The reversal of 4240209 is 9020424.

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

It is not a de Polignac number, because 4240209 - 2¹ = 4240207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4240207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6157 + ... + 6810.

It is an arithmetic number, because the mean of its divisors is an integer number (713240).

Almost surely, 2^4240209 is an apocalyptic number.

It is an amenable number.

4240209 is a deficient number, since it is larger than the sum of its proper divisors (1465711).

4240209 is a wasteful number, since it uses less digits than its factorization.

4240209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13079.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4240209 is about 2059.1767772583. The cubic root of 4240209 is about 161.8561060321.

The spelling of 4240209 in words is "four million, two hundred forty thousand, two hundred nine".