304221469 has 4 divisors (see below), whose sum is σ = 304492060. Its totient is φ = 303950880.

The previous prime is 304221451. The next prime is 304221481. The reversal of 304221469 is 964122403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 964122403 = 131 ⋅7359713.

It can be written as a sum of positive squares in 2 ways, for example, as 190798969 + 113422500 = 13813^2 + 10650^2 .

It is a cyclic number.

It is not a de Polignac number, because 304221469 - 2¹⁹ = 303697181 is a prime.

It is a super-2 number, since 2×304221469² = 185101404401035922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304221469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304221499) 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 3 ways as a sum of consecutive naturals, for example, 133602 + ... + 135859.

It is an arithmetic number, because the mean of its divisors is an integer number (76123015).

Almost surely, 2^304221469 is an apocalyptic number.

It is an amenable number.

304221469 is a deficient number, since it is larger than the sum of its proper divisors (270591).

304221469 is a wasteful number, since it uses less digits than its factorization.

304221469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270590.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 304221469 is about 17441.9456770167. The cubic root of 304221469 is about 672.5583253495.

The spelling of 304221469 in words is "three hundred four million, two hundred twenty-one thousand, four hundred sixty-nine".