16894399 has 4 divisors (see below), whose sum is σ = 17287336. Its totient is φ = 16501464.

The previous prime is 16894373. The next prime is 16894403. The reversal of 16894399 is 99349861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16894399 - 2⁷ = 16894271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16894699) 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 in 3 ways as a sum of consecutive naturals, for example, 196404 + ... + 196489.

It is an arithmetic number, because the mean of its divisors is an integer number (4321834).

Almost surely, 2^16894399 is an apocalyptic number.

16894399 is a deficient number, since it is larger than the sum of its proper divisors (392937).

16894399 is an equidigital number, since it uses as much as digits as its factorization.

16894399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392936.

The product of its digits is 419904, while the sum is 49.

The square root of 16894399 is about 4110.2796741828. The cubic root of 16894399 is about 256.5946412471.

The spelling of 16894399 in words is "sixteen million, eight hundred ninety-four thousand, three hundred ninety-nine".