304448139 has 12 divisors (see below), whose sum is σ = 456046136. Its totient is φ = 202965264.

The previous prime is 304448101. The next prime is 304448141. The reversal of 304448139 is 931844403.

It is not a de Polignac number, because 304448139 - 2¹¹ = 304446091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304448149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626194 + ... + 626679.

Almost surely, 2^304448139 is an apocalyptic number.

304448139 is a deficient number, since it is larger than the sum of its proper divisors (151597997).

304448139 is an equidigital number, since it uses as much as digits as its factorization.

304448139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252888 (or 1252876 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 304448139 is about 17448.4423086991. The cubic root of 304448139 is about 672.7253209591.

It can be divided in two parts, 30444 and 8139, that added together give a palindrome (38583).

The spelling of 304448139 in words is "three hundred four million, four hundred forty-eight thousand, one hundred thirty-nine".