16790809 has 8 divisors (see below), whose sum is σ = 19808768. Its totient is φ = 13927680.

The previous prime is 16790801. The next prime is 16790833. The reversal of 16790809 is 90809761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16790809 - 2³ = 16790801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16790801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38472 + ... + 38905.

It is an arithmetic number, because the mean of its divisors is an integer number (2476096).

Almost surely, 2^16790809 is an apocalyptic number.

It is an amenable number.

16790809 is a deficient number, since it is larger than the sum of its proper divisors (3017959).

16790809 is an equidigital number, since it uses as much as digits as its factorization.

16790809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77415.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 16790809 is about 4097.6589657999. The cubic root of 16790809 is about 256.0691189098.

The spelling of 16790809 in words is "sixteen million, seven hundred ninety thousand, eight hundred nine".