16935809 has 4 divisors (see below), whose sum is σ = 18475440. Its totient is φ = 15396180.

The previous prime is 16935799. The next prime is 16935817. The reversal of 16935809 is 90853961.

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.

It is a cyclic number.

It is not a de Polignac number, because 16935809 - 2¹² = 16931713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16935869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769799 + ... + 769820.

It is an arithmetic number, because the mean of its divisors is an integer number (4618860).

Almost surely, 2^16935809 is an apocalyptic number.

It is an amenable number.

16935809 is a deficient number, since it is larger than the sum of its proper divisors (1539631).

16935809 is a wasteful number, since it uses less digits than its factorization.

16935809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539630.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 16935809 is about 4115.3139612914. The cubic root of 16935809 is about 256.8041172675.

The spelling of 16935809 in words is "sixteen million, nine hundred thirty-five thousand, eight hundred nine".