304140989 has 8 divisors (see below), whose sum is σ = 305905920. Its totient is φ = 302381856.

The previous prime is 304140979. The next prime is 304141001. The reversal of 304140989 is 989041403.

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

It is a cyclic number.

It is not a de Polignac number, because 304140989 - 2²⁸ = 35705533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304140919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140852 + ... + 142994.

It is an arithmetic number, because the mean of its divisors is an integer number (38238240).

Almost surely, 2^304140989 is an apocalyptic number.

It is an amenable number.

304140989 is a deficient number, since it is larger than the sum of its proper divisors (1764931).

304140989 is a wasteful number, since it uses less digits than its factorization.

304140989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 304140989 is about 17439.6384423531. The cubic root of 304140989 is about 672.4990130028.

The spelling of 304140989 in words is "three hundred four million, one hundred forty thousand, nine hundred eighty-nine".