9990999019 has 2 divisors, whose sum is σ = 9990999020. Its totient is φ = 9990999018.

The previous prime is 9990998987. The next prime is 9990999143. The reversal of 9990999019 is 9109990999.

9990999019 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9990999019 - 2⁵ = 9990998987 is a prime.

It is a super-2 number, since 2×9990999019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9990919019) 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, 4995499509 + 4995499510.

It is an arithmetic number, because the mean of its divisors is an integer number (4995499510).

Almost surely, 2^9990999019 is an apocalyptic number.

9990999019 is a deficient number, since it is larger than the sum of its proper divisors (1).

9990999019 is an equidigital number, since it uses as much as digits as its factorization.

9990999019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4782969, while the sum is 64.

The square root of 9990999019 is about 99954.9849632323. The cubic root of 9990999019 is about 2153.7880951364.

The spelling of 9990999019 in words is "nine billion, nine hundred ninety million, nine hundred ninety-nine thousand, nineteen".