304241389 has 2 divisors, whose sum is σ = 304241390. Its totient is φ = 304241388.

The previous prime is 304241369. The next prime is 304241423. The reversal of 304241389 is 983142403.

It is an a-pointer prime, because the next prime (304241423) can be obtained adding 304241389 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301300164 + 2941225 = 17358^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 304241389 - 2⁷ = 304241261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304241369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152120694 + 152120695.

It is an arithmetic number, because the mean of its divisors is an integer number (152120695).

Almost surely, 2^304241389 is an apocalyptic number.

It is an amenable number.

304241389 is a deficient number, since it is larger than the sum of its proper divisors (1).

304241389 is an equidigital number, since it uses as much as digits as its factorization.

304241389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 304241389 is about 17442.5167048795. The cubic root of 304241389 is about 672.5730044247.

It can be divided in two parts, 30424 and 1389, that added together give a palindrome (31813).

The spelling of 304241389 in words is "three hundred four million, two hundred forty-one thousand, three hundred eighty-nine".