990519149 has 2 divisors, whose sum is σ = 990519150. Its totient is φ = 990519148.

The previous prime is 990519137. The next prime is 990519151. The reversal of 990519149 is 941915099.

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., 945870025 + 44649124 = 30755^2 + 6682^2 .

It is a cyclic number.

It is not a de Polignac number, because 990519149 - 2¹⁶ = 990453613 is a prime.

It is a super-2 number, since 2×990519149² = 1962256369071368402, which contains 22 as substring.

Together with 990519151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is a weakly prime.

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, 495259574 + 495259575.

It is an arithmetic number, because the mean of its divisors is an integer number (495259575).

Almost surely, 2^990519149 is an apocalyptic number.

It is an amenable number.

990519149 is a deficient number, since it is larger than the sum of its proper divisors (1).

990519149 is an equidigital number, since it uses as much as digits as its factorization.

990519149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 47.

The square root of 990519149 is about 31472.5141830137. The cubic root of 990519149 is about 996.8296760007.

The spelling of 990519149 in words is "nine hundred ninety million, five hundred nineteen thousand, one hundred forty-nine".