999350249 has 2 divisors, whose sum is σ = 999350250. Its totient is φ = 999350248.

The previous prime is 999350221. The next prime is 999350263. The reversal of 999350249 is 942053999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950797225 + 48553024 = 30835^2 + 6968^2 .

It is an emirp because it is prime and its reverse (942053999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999350249 is a prime.

It is a super-4 number, since 4×999350249⁴ (a number of 37 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999350197 and 999350206.

It is not a weakly prime, because it can be changed into another prime (999350269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499675124 + 499675125.

It is an arithmetic number, because the mean of its divisors is an integer number (499675125).

Almost surely, 2^999350249 is an apocalyptic number.

It is an amenable number.

999350249 is a deficient number, since it is larger than the sum of its proper divisors (1).

999350249 is an equidigital number, since it uses as much as digits as its factorization.

999350249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 787320, while the sum is 50.

The square root of 999350249 is about 31612.5014669830. The cubic root of 999350249 is about 999.7833694079.

The spelling of 999350249 in words is "nine hundred ninety-nine million, three hundred fifty thousand, two hundred forty-nine".