16909699 has 2 divisors, whose sum is σ = 16909700. Its totient is φ = 16909698.

The previous prime is 16909693. The next prime is 16909721. The reversal of 16909699 is 99690961.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (99690961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16909699 - 2³ = 16909691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16909691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8454849 + 8454850.

It is an arithmetic number, because the mean of its divisors is an integer number (8454850).

Almost surely, 2^16909699 is an apocalyptic number.

16909699 is a deficient number, since it is larger than the sum of its proper divisors (1).

16909699 is an equidigital number, since it uses as much as digits as its factorization.

16909699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 16909699 is about 4112.1404402087. The cubic root of 16909699 is about 256.6720774332.

The spelling of 16909699 in words is "sixteen million, nine hundred nine thousand, six hundred ninety-nine".