2398209 has 8 divisors (see below), whose sum is σ = 3488352. Its totient is φ = 1453440.

The previous prime is 2398189. The next prime is 2398211. The reversal of 2398209 is 9028932.

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

It is not a de Polignac number, because 2398209 - 2⁵ = 2398177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 72673 = 2398209 / (2 + 3 + 9 + 8 + 2 + 0 + 9).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2398209.

It is not an unprimeable number, because it can be changed into a prime (2398259) 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, 36304 + ... + 36369.

It is an arithmetic number, because the mean of its divisors is an integer number (436044).

It is a Proth number, since it is equal to 1171 ⋅ 2¹¹ + 1 and 1171 < 2¹¹.

2^2398209 is an apocalyptic number.

It is an amenable number.

2398209 is a deficient number, since it is larger than the sum of its proper divisors (1090143).

2398209 is a wasteful number, since it uses less digits than its factorization.

2398209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72687.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 2398209 is about 1548.6151878372. The cubic root of 2398209 is about 133.8532774393.

It can be divided in two parts, 239 and 8209, that added together give a palindrome (8448).

The spelling of 2398209 in words is "two million, three hundred ninety-eight thousand, two hundred nine".