304009985 has 4 divisors (see below), whose sum is σ = 364811988. Its totient is φ = 243207984.

The previous prime is 304009969. The next prime is 304010009. The reversal of 304009985 is 589900403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 176252176 + 127757809 = 13276^2 + 11303^2 .

It is a cyclic number.

It is not a de Polignac number, because 304009985 - 2⁴ = 304009969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30400994 + ... + 30401003.

It is an arithmetic number, because the mean of its divisors is an integer number (91202997).

Almost surely, 2^304009985 is an apocalyptic number.

It is an amenable number.

304009985 is a deficient number, since it is larger than the sum of its proper divisors (60802003).

304009985 is an equidigital number, since it uses as much as digits as its factorization.

304009985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60802002.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 304009985 is about 17435.8821113243. The cubic root of 304009985 is about 672.4024429732.

The spelling of 304009985 in words is "three hundred four million, nine thousand, nine hundred eighty-five".