304890933 has 4 divisors (see below), whose sum is σ = 406521248. Its totient is φ = 203260620.

The previous prime is 304890931. The next prime is 304890947. The reversal of 304890933 is 339098403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 304890933 - 2¹ = 304890931 is a prime.

It is a super-2 number, since 2×304890933² = 185916962051220978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304890891 and 304890900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304890931) 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, 50815153 + ... + 50815158.

It is an arithmetic number, because the mean of its divisors is an integer number (101630312).

Almost surely, 2^304890933 is an apocalyptic number.

It is an amenable number.

304890933 is a deficient number, since it is larger than the sum of its proper divisors (101630315).

304890933 is a wasteful number, since it uses less digits than its factorization.

304890933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101630314.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 304890933 is about 17461.1263382406. The cubic root of 304890933 is about 673.0513036155.

The spelling of 304890933 in words is "three hundred four million, eight hundred ninety thousand, nine hundred thirty-three".