304489949 has 4 divisors (see below), whose sum is σ = 304563420. Its totient is φ = 304416480.

The previous prime is 304489921. The next prime is 304489951. The reversal of 304489949 is 949984403.

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 100200100 + 204289849 = 10010^2 + 14293^2 .

It is a cyclic number.

It is not a de Polignac number, because 304489949 - 2²⁸ = 36054493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304489897 and 304489906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304489049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30122 + ... + 38939.

It is an arithmetic number, because the mean of its divisors is an integer number (76140855).

Almost surely, 2^304489949 is an apocalyptic number.

It is an amenable number.

304489949 is a deficient number, since it is larger than the sum of its proper divisors (73471).

304489949 is an equidigital number, since it uses as much as digits as its factorization.

304489949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73470.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 304489949 is about 17449.6403687870. The cubic root of 304489949 is about 672.7561147732.

The spelling of 304489949 in words is "three hundred four million, four hundred eighty-nine thousand, nine hundred forty-nine".