16990003 has 2 divisors, whose sum is σ = 16990004. Its totient is φ = 16990002.

The previous prime is 16989997. The next prime is 16990007. The reversal of 16990003 is 30009961.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16990003 - 2⁹ = 16989491 is a prime.

It is not a weakly prime, because it can be changed into another prime (16990007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8495001 + 8495002.

It is an arithmetic number, because the mean of its divisors is an integer number (8495002).

Almost surely, 2^16990003 is an apocalyptic number.

16990003 is a deficient number, since it is larger than the sum of its proper divisors (1).

16990003 is an equidigital number, since it uses as much as digits as its factorization.

16990003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 16990003 is about 4121.8931330155. The cubic root of 16990003 is about 257.0777470219.

Adding to 16990003 its reverse (30009961), we get a palindrome (46999964).

The spelling of 16990003 in words is "sixteen million, nine hundred ninety thousand, three".