304939 has 4 divisors (see below), whose sum is σ = 310000. Its totient is φ = 299880.

The previous prime is 304937. The next prime is 304943. The reversal of 304939 is 939403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939403 = 17 ⋅55259.

It is a cyclic number.

It is not a de Polignac number, because 304939 - 2¹ = 304937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304933) 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, 2439 + ... + 2560.

It is an arithmetic number, because the mean of its divisors is an integer number (77500).

2³⁰⁴⁹³⁹ is an apocalyptic number.

304939 is a deficient number, since it is larger than the sum of its proper divisors (5061).

304939 is an equidigital number, since it uses as much as digits as its factorization.

304939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 304939 is about 552.2128212927. The cubic root of 304939 is about 67.3086671298.

The spelling of 304939 in words is "three hundred four thousand, nine hundred thirty-nine".