16794409 has 4 divisors (see below), whose sum is σ = 17079120. Its totient is φ = 16509700.

The previous prime is 16794403. The next prime is 16794433. The reversal of 16794409 is 90449761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90449761 = 47 ⋅1924463.

It is a cyclic number.

It is not a de Polignac number, because 16794409 - 2⁵ = 16794377 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16794403) 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 in 3 ways as a sum of consecutive naturals, for example, 142267 + ... + 142384.

It is an arithmetic number, because the mean of its divisors is an integer number (4269780).

Almost surely, 2^16794409 is an apocalyptic number.

It is an amenable number.

16794409 is a deficient number, since it is larger than the sum of its proper divisors (284711).

16794409 is an equidigital number, since it uses as much as digits as its factorization.

16794409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284710.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 16794409 is about 4098.0982174662. The cubic root of 16794409 is about 256.0874182653.

The spelling of 16794409 in words is "sixteen million, seven hundred ninety-four thousand, four hundred nine".