990060820249 has 2 divisors, whose sum is σ = 990060820250. Its totient is φ = 990060820248.

The previous prime is 990060820247. The next prime is 990060820337. The reversal of 990060820249 is 942028060099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 902370804624 + 87690015625 = 949932^2 + 296125^2 .

It is a cyclic number.

It is not a de Polignac number, because 990060820249 - 2¹ = 990060820247 is a prime.

Together with 990060820247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (990060820241) 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, 495030410124 + 495030410125.

It is an arithmetic number, because the mean of its divisors is an integer number (495030410125).

Almost surely, 2^990060820249 is an apocalyptic number.

It is an amenable number.

990060820249 is a deficient number, since it is larger than the sum of its proper divisors (1).

990060820249 is an equidigital number, since it uses as much as digits as its factorization.

990060820249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 990060820249 in words is "nine hundred ninety billion, sixty million, eight hundred twenty thousand, two hundred forty-nine".