2398309 has 8 divisors (see below), whose sum is σ = 2576448. Its totient is φ = 2224320.

The previous prime is 2398307. The next prime is 2398321. The reversal of 2398309 is 9038932.

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 2398309 - 2¹ = 2398307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398301) 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, 214 + ... + 2200.

It is an arithmetic number, because the mean of its divisors is an integer number (322056).

2^2398309 is an apocalyptic number.

It is an amenable number.

2398309 is a deficient number, since it is larger than the sum of its proper divisors (178139).

2398309 is a wasteful number, since it uses less digits than its factorization.

2398309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 2398309 is about 1548.6474744111. The cubic root of 2398309 is about 133.8551378751.

The spelling of 2398309 in words is "two million, three hundred ninety-eight thousand, three hundred nine".