999304949 has 2 divisors, whose sum is σ = 999304950. Its totient is φ = 999304948.

The previous prime is 999304927. The next prime is 999304951. The reversal of 999304949 is 949403999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999002449 + 302500 = 31607^2 + 550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999304949 is a prime.

It is a super-2 number, since 2×999304949² = 1997220762191785202, which contains 22 as substring.

Together with 999304951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 999304894 and 999304903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999304349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499652474 + 499652475.

It is an arithmetic number, because the mean of its divisors is an integer number (499652475).

Almost surely, 2^999304949 is an apocalyptic number.

It is an amenable number.

999304949 is a deficient number, since it is larger than the sum of its proper divisors (1).

999304949 is an equidigital number, since it uses as much as digits as its factorization.

999304949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2834352, while the sum is 56.

The square root of 999304949 is about 31611.7849701658. The cubic root of 999304949 is about 999.7682626353.

The spelling of 999304949 in words is "nine hundred ninety-nine million, three hundred four thousand, nine hundred forty-nine".