2438209 has 4 divisors (see below), whose sum is σ = 2461104. Its totient is φ = 2415316.

The previous prime is 2438203. The next prime is 2438239. The reversal of 2438209 is 9028342.

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 2438209 - 2⁷ = 2438081 is a prime.

It is a super-4 number, since 4×2438209⁴ (a number of 27 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2438203) 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, 11287 + ... + 11500.

It is an arithmetic number, because the mean of its divisors is an integer number (615276).

2^2438209 is an apocalyptic number.

It is an amenable number.

2438209 is a deficient number, since it is larger than the sum of its proper divisors (22895).

2438209 is a wasteful number, since it uses less digits than its factorization.

2438209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22894.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2438209 is about 1561.4765448126. The cubic root of 2438209 is about 134.5933625765.

The spelling of 2438209 in words is "two million, four hundred thirty-eight thousand, two hundred nine".