990010001003 has 2 divisors, whose sum is σ = 990010001004. Its totient is φ = 990010001002.

The previous prime is 990010000999. The next prime is 990010001063. The reversal of 990010001003 is 300100010099.

It is a weak prime.

It is an emirp because it is prime and its reverse (300100010099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990010001003 - 2² = 990010000999 is a prime.

It is a super-2 number, since 2×990010001003² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 990010001003.

It is not a weakly prime, because it can be changed into another prime (990010001063) 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, 495005000501 + 495005000502.

It is an arithmetic number, because the mean of its divisors is an integer number (495005000502).

Almost surely, 2^990010001003 is an apocalyptic number.

990010001003 is a deficient number, since it is larger than the sum of its proper divisors (1).

990010001003 is an equidigital number, since it uses as much as digits as its factorization.

990010001003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 23.

The spelling of 990010001003 in words is "nine hundred ninety billion, ten million, one thousand, three".