305238849 has 8 divisors (see below), whose sum is σ = 407269920. Its totient is φ = 203350176.

The previous prime is 305238827. The next prime is 305238851. The reversal of 305238849 is 948832503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 305238849 - 2⁷ = 305238721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305238849.

It is not an unprimeable number, because it can be changed into a prime (305238149) 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 7 ways as a sum of consecutive naturals, for example, 30492 + ... + 39245.

It is an arithmetic number, because the mean of its divisors is an integer number (50908740).

Almost surely, 2^305238849 is an apocalyptic number.

It is an amenable number.

305238849 is a deficient number, since it is larger than the sum of its proper divisors (102031071).

305238849 is a wasteful number, since it uses less digits than its factorization.

305238849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71199.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 305238849 is about 17471.0860853011. The cubic root of 305238849 is about 673.3072162260.

The spelling of 305238849 in words is "three hundred five million, two hundred thirty-eight thousand, eight hundred forty-nine".