304874489 has 2 divisors, whose sum is σ = 304874490. Its totient is φ = 304874488.

The previous prime is 304874473. The next prime is 304874503. The reversal of 304874489 is 984478403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303038464 + 1836025 = 17408^2 + 1355^2 .

It is a cyclic number.

It is not a de Polignac number, because 304874489 - 2⁴ = 304874473 is a prime.

It is a super-2 number, since 2×304874489² = 185896908086022242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (304873489) 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 as a sum of consecutive naturals, namely, 152437244 + 152437245.

It is an arithmetic number, because the mean of its divisors is an integer number (152437245).

Almost surely, 2^304874489 is an apocalyptic number.

It is an amenable number.

304874489 is a deficient number, since it is larger than the sum of its proper divisors (1).

304874489 is an equidigital number, since it uses as much as digits as its factorization.

304874489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 304874489 is about 17460.6554573418. The cubic root of 304874489 is about 673.0392032724.

The spelling of 304874489 in words is "three hundred four million, eight hundred seventy-four thousand, four hundred eighty-nine".