304389 has 12 divisors (see below), whose sum is σ = 454272. Its totient is φ = 196200.

The previous prime is 304373. The next prime is 304391. The reversal of 304389 is 983403.

It is not a de Polignac number, because 304389 - 2⁴ = 304373 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 0 + 3⁸ + 4⁹ + 8⁵ + 9³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267 + ... + 824.

It is an arithmetic number, because the mean of its divisors is an integer number (37856).

2³⁰⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

304389 is a deficient number, since it is larger than the sum of its proper divisors (149883).

304389 is a wasteful number, since it uses less digits than its factorization.

304389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 304389 is about 551.7146001331. The cubic root of 304389 is about 67.2681759211.

The spelling of 304389 in words is "three hundred four thousand, three hundred eighty-nine".