16349999 has 2 divisors, whose sum is σ = 16350000. Its totient is φ = 16349998.

The previous prime is 16349969. The next prime is 16350001. The reversal of 16349999 is 99994361.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (99994361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16349999 - 2⁸ = 16349743 is a prime.

It is a Sophie Germain prime.

Together with 16350001, it forms a pair of twin primes.

It is a Chen prime.

16349999 is a modest number, since divided by 9999 gives 1634 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16349959) 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, 8174999 + 8175000.

It is an arithmetic number, because the mean of its divisors is an integer number (8175000).

Almost surely, 2^16349999 is an apocalyptic number.

16349999 is a deficient number, since it is larger than the sum of its proper divisors (1).

16349999 is an equidigital number, since it uses as much as digits as its factorization.

16349999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 50.

The square root of 16349999 is about 4043.5132001763. The cubic root of 16349999 is about 253.8083525520.

The spelling of 16349999 in words is "sixteen million, three hundred forty-nine thousand, nine hundred ninety-nine".