304149 has 4 divisors (see below), whose sum is σ = 405536. Its totient is φ = 202764.

The previous prime is 304127. The next prime is 304151. The reversal of 304149 is 941403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 304149 - 2⁷ = 304021 is a prime.

It is a super-2 number, since 2×304149² = 185013228402, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304169) 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 3 ways as a sum of consecutive naturals, for example, 50689 + ... + 50694.

It is an arithmetic number, because the mean of its divisors is an integer number (101384).

2³⁰⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

304149 is a deficient number, since it is larger than the sum of its proper divisors (101387).

304149 is a wasteful number, since it uses less digits than its factorization.

304149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101386.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 304149 is about 551.4970534826. The cubic root of 304149 is about 67.2504917438.

The spelling of 304149 in words is "three hundred four thousand, one hundred forty-nine".