304439 has 2 divisors, whose sum is σ = 304440. Its totient is φ = 304438.

The previous prime is 304433. The next prime is 304457. The reversal of 304439 is 934403.

It is a weak prime.

It is an emirp because it is prime and its reverse (934403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 304439 - 2¹² = 300343 is a prime.

It is a Chen prime.

It is a plaindrome in base 8.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152219 + 152220.

It is an arithmetic number, because the mean of its divisors is an integer number (152220).

2³⁰⁴⁴³⁹ is an apocalyptic number.

304439 is a deficient number, since it is larger than the sum of its proper divisors (1).

304439 is an equidigital number, since it uses as much as digits as its factorization.

304439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 304439 is about 551.7599115557. The cubic root of 304439 is about 67.2718589546.

The spelling of 304439 in words is "three hundred four thousand, four hundred thirty-nine".